1. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨=𝒃𝒉
𝑨=(𝟏𝟎)(𝟖)
𝑨=𝟖𝟎 𝒄𝒎²

2. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒃𝒉
𝑨= 𝟏 𝟐 (𝟓)(𝟒.𝟑𝟑)
𝑨=𝟏𝟎.𝟖𝟐𝟓 𝒇𝒕²

3. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨=𝒃𝒉
𝑨=(𝟏𝟑)(𝟏𝟏)
𝑨=𝟏𝟒𝟑 𝒇𝒕²

4. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒃𝒉
𝑨= 𝟏 𝟐 (𝟏𝟕)(𝟏𝟐)
𝑨=𝟏𝟎𝟐 𝒎²

5. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒃𝒉
𝑨= 𝟏 𝟐 (𝟏𝟎)(𝟐𝟒)
𝒄 𝟐 = 𝒂 𝟐 + 𝒃 𝟐
(𝟐𝟔) 𝟐 = (𝟐𝟒) 𝟐 + 𝒃 𝟐
𝑨=𝟏𝟐𝟎 𝒚𝒅²
𝟔𝟕𝟔=𝟓𝟕𝟔+ 𝒃 𝟐
𝟏𝟎𝟎= 𝒃 𝟐
𝟏𝟎=𝒃

6. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review

7. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒂𝒑
𝑨= 𝟏 𝟐 (𝟑 𝟐 )(𝟐𝟒 𝟐 ) 6
=𝒏 𝟐
𝟒𝟓° 𝒏
𝑨= 𝟏 𝟐 (𝟑∙𝟐𝟒)( 𝟐 ∙ 𝟐 )
𝟒𝟓° 𝒏 𝑎= 𝑝= 𝑛= 𝑠=
𝟑 𝟐
𝑨= 𝟏 𝟐 (𝟕𝟐)(𝟐)
𝟐𝟒 𝟐 𝟒
𝑨=𝟕𝟐 𝒄𝒎²
𝟔 𝟐

8. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒉( 𝒃 𝟏 + 𝒃 𝟐 )
𝑨= 𝟏 𝟐 (𝟑)(𝟒+𝟔)
𝑨= 𝟏 𝟐 (𝟑)(𝟏𝟎)
𝑨=𝟏𝟓 𝒊𝒏²

9. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒃𝒉
𝟔𝟎°
𝟑𝟎°
=𝟐𝒏
𝒏 𝟑
𝑨= 𝟏 𝟐 (𝟓)(𝟐.𝟓 𝟑 )
𝟔𝟎°
𝟔𝟎° 𝒏 𝑏= ℎ= 𝟓
𝑨= 𝟔.𝟐𝟓 𝟑 𝒎𝒎²
𝟐.𝟓 𝟑
𝑨= 𝟐𝟓 𝟒 𝟑 𝒎𝒎²

10. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒂𝒑
𝟔𝟎°
𝑨= 𝟏 𝟐 ( 𝟐.𝟓 𝟑 𝟑 )(𝟏𝟓)
𝟏𝟐𝟎°
𝟔𝟎° 𝒏
𝟔𝟎°
𝟑𝟎°
𝟑𝟎°
𝟔𝟎°
𝒏 𝟑
=𝟐.𝟓
𝟐.𝟓 𝟑 𝟑 𝑎= 𝑝= 𝑛= 𝑠=
𝑨= 𝟔.𝟐𝟓 𝟑 𝒎𝒎² 𝟏𝟓
𝑨= 𝟐𝟓 𝟒 𝟑 𝒎𝒎² 𝟑 𝟓

11. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒂𝒑
𝑨= 𝟏 𝟐 (𝟒)(𝟏𝟔 𝟑 )
𝒏 𝟑
𝟑𝟎°
𝟔𝟎° 𝒏 𝒏
𝑨=𝟑𝟐 𝟑 𝒇𝒕² 𝑎= 𝑝= 𝑛= 𝑠= 𝟒
𝟏𝟔 𝟑 𝟔
𝟖 𝟑 𝟑

12. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒅 𝟏 𝒅 𝟏
𝑨= 𝟏 𝟐 (𝟏𝟐)(𝟖)
𝑨=𝟒𝟖 𝒄𝒎²

13. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨= 𝟏 𝟐 𝒅 𝟏 𝒅 𝟏
𝑨= 𝟏 𝟐 (𝟔)(𝟔)
𝑨=𝟏𝟖 𝒚𝒅²

14. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑷𝒆𝒓𝒊𝒎𝒆𝒕𝒆𝒓= 𝟓 𝟖
𝑨𝒓𝒆𝒂= 𝟓 𝟐 𝟖 𝟐
= 𝟐𝟓 𝟔𝟒

15. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑷𝒆𝒓𝒊𝒎𝒆𝒕𝒆𝒓= 𝟔 𝟖
= 𝟑 𝟒
𝑨𝒓𝒆𝒂= 𝟑 𝟐 𝟒 𝟐
= 𝟗 𝟏𝟔

16. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑷𝒆𝒓𝒊𝒎𝒆𝒕𝒆𝒓= 𝟓 𝟏𝟔
𝑨𝒓𝒆𝒂= 𝟓 𝟐 𝟏𝟔 𝟐
= 𝟐𝟓 𝟐𝟓𝟔

17. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
Lesson Trigonometry and Area
Find the area of each regular polygon. Round your answers to the nearest tenth.
𝟑𝟔𝟎 𝟗 =𝟒𝟎°
16.
nonagon with radius 6 ft.
𝟐𝟎°
𝑨= 𝟏 𝟐 𝒂𝒑 𝟔 𝑎= 𝑝= 𝑛= 𝑠=
𝟓.𝟔𝟑𝟖𝟏 𝟔 𝒂
𝟑𝟔.𝟗𝟑𝟖𝟏
𝑨= 𝟏 𝟐 (𝟓.𝟔𝟒)(𝟑𝟔.𝟗) 𝟗 𝒙 𝒙
𝟒.𝟏𝟎𝟒𝟐
𝑨=𝟏𝟎𝟒.𝟏 𝒇𝒕² 𝒔
𝐜𝐨𝐬 𝟐𝟎°= 𝒂 𝟔
𝐬𝐢𝐧 𝟐𝟎°= 𝒙 𝟔
𝒂 =𝟔𝐜𝐨𝐬 𝟐𝟎°
𝒙 =𝟐(𝟔𝐬𝐢𝐧 𝟐𝟎°)

18. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
Lesson Trigonometry and Area
Find the area of each regular polygon. Round your answers to the nearest tenth.
𝟑𝟔𝟎 𝟏𝟎 =𝟑𝟔°
17.
decagon with radius 5 mm
𝟏𝟖°
𝑨= 𝟏 𝟐 𝒂𝒑 𝟓 𝑎= 𝑝= 𝑛= 𝑠=
𝟒.𝟕𝟓𝟓𝟐 𝟓 𝒂
𝟑𝟎.𝟗𝟎𝟏𝟔
𝑨= 𝟏 𝟐 (𝟒.𝟕𝟔)(𝟑𝟎.𝟗) 𝟏𝟎 𝒙 𝒙
𝟑.𝟎𝟗𝟎𝟏
𝑨=𝟕𝟑.𝟓 𝒎𝒎² 𝒔
𝐜𝐨𝐬 𝟏𝟖°= 𝒂 𝟓
𝐬𝐢𝐧 𝟏𝟖°= 𝒙 𝟓
𝒂 =𝟓𝐜𝐨𝐬 𝟏𝟖°
𝒙 =𝟐(𝟓𝐬𝐢𝐧 𝟏𝟖°)

19. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
Find the area of each triangle. Round your answers to the nearest tenth.
𝑨= 𝟏 𝟐 ∙𝒔∙𝒔∙ 𝐬𝐢𝐧 (𝒊𝒏𝒄𝒍𝒖𝒅𝒆𝒅 𝒂𝒏𝒈𝒍𝒆)
18.
𝑨= 𝟏 𝟐 ∙𝟔∙𝟒∙ 𝐬𝐢𝐧 (𝟔𝟖°)
𝑨=𝟏𝟏.𝟏 𝒎²

20. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
Find the area of each triangle. Round your answers to the nearest tenth.
𝑨= 𝟏 𝟐 ∙𝒔∙𝒔∙ 𝐬𝐢𝐧 (𝒊𝒏𝒄𝒍𝒖𝒅𝒆𝒅 𝒂𝒏𝒈𝒍𝒆)
19.
𝑨= 𝟏 𝟐 ∙𝟏𝟐∙𝟏𝟏∙ 𝐬𝐢𝐧 (𝟑𝟑°)
𝑨=𝟑𝟓.𝟗 𝒊𝒏²

21. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
Find the area of each triangle. Round your answers to the nearest tenth.
𝑨= 𝟏 𝟐 ∙𝒔∙𝒔∙ 𝐬𝐢𝐧 (𝒊𝒏𝒄𝒍𝒖𝒅𝒆𝒅 𝒂𝒏𝒈𝒍𝒆)
20.
𝑨= 𝟏 𝟐 ∙𝟖∙𝟒.𝟓∙ 𝐬𝐢𝐧 (𝟗𝟗°)
𝑨=𝟏𝟕.𝟖 𝒄𝒎²

22. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
Find the perimeter and area of each regular polygon to the nearest tenth.
𝟑𝟔𝟎 𝟑 =𝟏𝟐𝟎°
21.
𝑨= 𝟏 𝟐 𝒂𝒑 𝟐𝒏
𝑨= 𝟏 𝟐 (𝟑)(𝟏𝟖 𝟑 ) 𝒏
𝟔𝟎°
𝟑𝟎°
𝒏 𝟑
𝑨=𝟒𝟔.𝟖 𝒊𝒏² 𝑎= 𝑝= 𝑛= 𝑠= 𝟑
𝟏𝟖 𝟑 𝟑
𝟔 𝟑

23. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
Find the perimeter and area of each regular polygon to the nearest tenth.
𝟑𝟔𝟎 𝟔 =𝟔𝟎°
22.
𝑨= 𝟏 𝟐 𝒂𝒑 𝟐𝒏
𝑨= 𝟏 𝟐 (𝟔 𝟑 )(𝟕𝟐)
𝒏 𝟑
𝟑𝟎°
𝟔𝟎° 𝒏
𝑨=𝟑𝟕𝟒.𝟏 𝒊𝒏² 𝑎= 𝑝= 𝑛= 𝑠=
𝟔 𝟑 𝟕𝟐 𝟔 𝟏𝟐

24. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
Find the perimeter and area of each regular polygon to the nearest tenth.
𝟑𝟔𝟎 𝟓 =𝟕𝟐°
𝑨= 𝟏 𝟐 𝒂𝒑
23.
𝑨= 𝟏 𝟐 (𝟏𝟐.𝟗𝟒𝟒𝟐)(𝟗𝟒.𝟎𝟒𝟓𝟔) 𝒂
𝟑𝟔° 𝒙
𝑨=𝟔𝟎𝟖.𝟕 𝒊𝒏² 𝒙 𝒔 𝑎= 𝑝= 𝑛= 𝑠=
𝟏𝟐.𝟗𝟒𝟒𝟐
𝟗𝟒.𝟎𝟒𝟓𝟔
𝐜𝐨𝐬 𝟑𝟔°= 𝒂 𝟏𝟔
𝐬𝐢𝐧 𝟑𝟔°= 𝒙 𝟏𝟔 𝟓
𝟏𝟖.𝟖𝟎𝟗𝟏
𝒂 =𝟏𝟔𝐜𝐨𝐬 𝟑𝟔°
𝒙 =𝟐(𝟏𝟔𝐬𝐢𝐧 𝟑𝟔°)

25. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
24.
𝑳 𝑨𝒓𝒄= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝟐𝝅𝒓
𝒄=𝟐𝝅𝒓
𝒄=𝟐𝝅(𝟑)
𝑳 𝑨𝒓𝒄= 𝟏𝟐𝟎 𝟑𝟔𝟎 ∙𝟐𝝅(𝟑)
𝒄=𝟔𝝅
𝑳 𝑨𝒓𝒄= 𝟏 𝟑 ∙𝟔𝝅
𝒅=𝟔 𝒄𝒎
𝒓=𝟑 𝒄𝒎
𝑳 𝑨𝒓𝒄=𝟐𝝅
𝒎𝑨𝒓𝒄=𝟏𝟐𝟎°

26. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑳 𝑨𝒓𝒄= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝟐𝝅𝒓
25.
𝒄=𝟐𝝅𝒓
𝒄=𝟐𝝅(𝟏𝟎)
𝑳 𝑨𝒓𝒄= 𝟑𝟎 𝟑𝟔𝟎 ∙𝟐𝝅(𝟏𝟎)
𝒄=𝟐𝟎𝝅
𝑳 𝑨𝒓𝒄= 𝟏 𝟏𝟐 ∙𝟐𝟎𝝅
𝒅=𝟐𝟎 𝒇𝒕
𝒓=𝟏𝟎 𝒇𝒕
𝑳 𝑨𝒓𝒄= 𝟐𝟎 𝟏𝟐 𝝅
= 𝟓 𝟑 𝝅
𝒎𝑨𝒓𝒄=𝟑𝟎°

27. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑳 𝑨𝒓𝒄= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝟐𝝅𝒓
26.
𝒄=𝟐𝝅𝒓
𝒄=𝟐𝝅(𝟗)
𝑳 𝑨𝒓𝒄= 𝟗𝟎 𝟑𝟔𝟎 ∙𝟐𝝅(𝟗)
𝒄=𝟏𝟖𝝅
𝑳 𝑨𝒓𝒄= 𝟏 𝟒 ∙𝟏𝟖𝝅
𝒓=𝟗 𝒄𝒎
𝑳 𝑨𝒓𝒄= 𝟏𝟖 𝟒 𝝅
= 𝟗 𝟐 𝝅
𝒎𝑨𝒓𝒄=𝟗𝟎°

28. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑳 𝑨𝒓𝒄= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝟐𝝅𝒓
27.
𝒄=𝟐𝝅𝒓
𝒄=𝟐𝝅(𝟓)
𝑳 𝑨𝒓𝒄= 𝟐𝟐𝟓 𝟑𝟔𝟎 ∙𝟐𝝅(𝟓)
𝒄=𝟏𝟎𝝅
𝑳 𝑨𝒓𝒄= 𝟐𝟓 𝟒𝟎 ∙𝟏𝟎𝝅
𝒓=𝟓 𝒊𝒏
𝑳 𝑨𝒓𝒄= 𝟐𝟓𝟎 𝟒𝟎 𝝅
= 𝟐𝟓 𝟒 𝝅
𝒎𝑨𝒓𝒄=𝟐𝟐𝟓°

29. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑳 𝑨𝒓𝒄= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝟐𝝅𝒓
28.
𝒄=𝟐𝝅𝒓
𝒄=𝟐𝝅(𝟕.𝟓)
𝑳 𝑨𝒓𝒄= 𝟏𝟑𝟓 𝟑𝟔𝟎 ∙𝟐𝝅(𝟕.𝟓)
𝒄=𝟏𝟓𝝅
𝑳 𝑨𝒓𝒄= 𝟗 𝟐𝟒 ∙𝟏𝟓𝝅
𝒅=𝟏𝟓 𝒎
𝒓=𝟕.𝟓 𝒎
𝑳 𝑨𝒓𝒄= 𝟏𝟑𝟓 𝟐𝟒 𝝅
= 𝟒𝟓 𝟖 𝝅
𝒎𝑨𝒓𝒄=𝟏𝟑𝟓°

30. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑳 𝑨𝒓𝒄= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝟐𝝅𝒓
29.
𝒄=𝟐𝝅𝒓
𝒄=𝟐𝝅(𝟒)
𝑳 𝑨𝒓𝒄= 𝟐𝟏𝟔 𝟑𝟔𝟎 ∙𝟐𝝅(𝟒)
𝒄=𝟖𝝅
𝑳 𝑨𝒓𝒄= 𝟑 𝟓 ∙𝟖𝝅
𝒓=𝟒 𝒇𝒕
𝑳 𝑨𝒓𝒄= 𝟐𝟒 𝟓 𝝅
𝒎𝑨𝒓𝒄=𝟐𝟏𝟔°

31. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
30.
𝒄=𝟐𝝅𝒓
𝟏 𝒌𝒎=𝟏𝟎𝟎𝟎 𝒎
𝒓=𝟎.𝟑𝟑 𝒎
𝒄=𝟐𝝅(𝟎.𝟑𝟑)
𝟏𝟎𝟎𝟎 𝒎 𝟐.𝟎𝟕𝟑𝟒 𝒎 =𝟒𝟖𝟐.𝟐𝟗𝟗𝟔
𝒄=𝟎.𝟔𝟔𝝅
𝒄=𝟐.𝟎𝟕𝟑𝟒 𝒎

32. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝝅𝒓²
31.
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟏𝟐𝟎 𝟑𝟔𝟎 ∙𝝅(𝟕)²
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟏 𝟑 ∙𝟒𝟗𝝅
𝒓=𝟕 𝒇𝒕
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟒𝟗 𝟑 𝝅 𝒇𝒕²
𝒎𝑨𝒓𝒄=𝟑𝟔𝟎−𝟐𝟒𝟎=𝟏𝟐𝟎

33. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨 𝒐𝒇 𝑺𝒆𝒈.= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝝅 𝒓 2 − 𝟏 𝟐 𝒓 2 𝒔𝒊𝒏(𝒎𝑨𝒓𝒄)
32.
= 𝟏𝟐𝟎 𝟑𝟔𝟎 ∙𝝅 (𝟔) 2 − 𝟏 𝟐 (𝟔) 2 𝒔𝒊𝒏(𝟏𝟐𝟎)
= 𝟏 𝟑 ∙𝟑𝟔𝝅− 𝟏 𝟐 𝟑𝟔𝒔𝒊𝒏(𝟏𝟐𝟎)
𝒓=𝟔 𝒊𝒏
𝒎𝑨𝒓𝒄=𝟏𝟖𝟎−𝟔𝟎=𝟏𝟐𝟎
=𝟏𝟐𝝅−𝟗 𝟑

34. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝝅𝒓²
33.
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟒𝟓 𝟑𝟔𝟎 ∙𝝅(𝟗)²
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟏 𝟖 ∙𝟖𝟏𝝅
𝒓=𝟗 𝒄𝒎
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟖𝟏 𝟖 𝝅 𝒄𝒎²
𝒎𝑨𝒓𝒄=𝟏𝟖𝟎−𝟏𝟑𝟓=𝟒𝟓

35. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨 𝒐𝒇 𝑺𝒆𝒈.= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝝅 𝒓 2 − 𝟏 𝟐 𝒓 2 𝒔𝒊𝒏(𝒎𝑨𝒓𝒄)
34.
= 𝟗𝟎 𝟑𝟔𝟎 ∙𝝅 (𝟒) 2 − 𝟏 𝟐 (𝟒) 2 𝒔𝒊𝒏(𝟗𝟎)
= 𝟏 𝟒 ∙𝟏𝟔𝝅− 𝟏 𝟐 𝟏𝟔𝒔𝒊𝒏(𝟗𝟎)
𝒓=𝟒 𝒊𝒏
𝒎𝑨𝒓𝒄=𝟏𝟖𝟎−𝟗𝟎=𝟗𝟎
=𝟒𝝅−𝟖

36. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝝅𝒓²
35.
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟏𝟔𝟎 𝟑𝟔𝟎 ∙𝝅(𝟗)²
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟒 𝟗 ∙𝟖𝟏𝝅
𝒓=𝟗 𝒄𝒎
𝑨 𝒐𝒇 𝑺𝒆𝒄.=𝟑𝟔𝝅 𝒚𝒅²
𝒎𝑨𝒓𝒄=𝟑𝟔𝟎−𝟐𝟎𝟎=𝟏𝟔𝟎

37. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
𝑨 𝒐𝒇 𝑺𝒆𝒈.= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝝅 𝒓 2 − 𝟏 𝟐 𝒓 2 𝒔𝒊𝒏(𝒎𝑨𝒓𝒄)
36.
= 𝟏𝟐𝟎 𝟑𝟔𝟎 ∙𝝅 (𝟒) 2 − 𝟏 𝟐 (𝟒) 2 𝒔𝒊𝒏(𝟏𝟐𝟎)
= 𝟏 𝟑 ∙𝟏𝟔𝝅− 𝟏 𝟐 𝟏𝟔𝒔𝒊𝒏(𝟏𝟐𝟎)
𝒓=𝟒 𝒎𝒎
𝒎𝑨𝒓𝒄=𝟏𝟖𝟎−𝟔𝟎=𝟏𝟐𝟎
= 𝟏𝟔 𝟑 𝝅−𝟒 𝟑

38. International Studies Charter School
Mrs. Rivas
International Studies Charter School
Chapter 10 Test Review
37.
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝒎𝑨𝒓𝒄 𝟑𝟔𝟎 ∙𝝅𝒓²
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟔𝟎 𝟑𝟔𝟎 ∙𝝅(𝟕)²
𝑨 𝒐𝒇 𝑺𝒆𝒄.= 𝟏 𝟔 ∙𝟒𝟗𝝅
𝒓=𝟕 𝒊𝒏
𝑨 𝒐𝒇 𝑺𝒆𝒄.=𝟐𝟓.𝟔𝟓𝟓𝟑
𝒎𝑨𝒓𝒄=𝟑𝟔𝟎÷𝟔=𝟔𝟎
𝑨 𝒐𝒇 𝑺𝒆𝒄.=𝟐𝟔 𝒊𝒏²