1. Chapter 10.1-10.4 Review Understand how to use formulas to find area and perimeter
DO NOW: A particular rectangle has an area of 36 square feet and a perimeter of 26 feet. If the rectangle is scaled (dilated) by a factor of 3, what would be the perimeter and area of the resulting image?
Today’s Agenda
Do Now
Check HW
Performance Task Tuesday/Test Wednesday
Success Criteria:
I can identify vocabulary
I can use formulas to find area

2. Chapter 10.1-10.4 Review Understand how to use formulas to find area and perimeter
DO NOW: The wallpaper pattern shown is a rectangle with a base of 4 ft. and a height of 3 ft. Use the grid to find the area of the shaded kite. If the kite’s wall paper pattern costs $24 per square foot to manufacture. How much will it cost just to create the kite?
A = 3 ft2
$72 per sq. ft.
Today’s Agenda
Do Now
Stuck Points
Finish Review (first half of class) Check review (second half of class)
Performance Task Tuesday/Test Wednesday
Success Criteria:
I can identify vocabulary
I can use formulas to find area

5. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the area of the Kite 1. 3. 2.

6. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the area the parallelogram 6. 4. 5.

7. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the area of the triangle. 9. 7. 8.

8. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the total area of the combined figures.
12.
10.
11.
13.

9. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the area of the trapezoids.
14.
16.
17.
15.

10. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the area of each rhombus.
18.
20.
19.
21.

11. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the value of h.
24.
22.
23.

12. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the area of the regular polygons.
25.
26.

13. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
Find the area of the regular polygon.
29.
27.
28.

14. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
30.
The area of a regular nonagon is 34 m2. What is the area of a regular nonagon with sides five times the sides of the smaller nonagon?
31.
The longer base of a right trapezoid is 12 ft. The longer base of a similar right trapezoid is 30 ft. The area of the smaller right trapezoid is 20 ft2. What is the area of the larger right trapezoid?

15. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
32.
The longer base of a trapezoid is 8 ft. The longer base of a similar trapezoid is 13 ft. The area of the smaller trapezoid is 240 ft2. What is the area of the larger trapezoid?
33.
Two similar parallelograms have areas 125 m2 and 80 m2. The height of the larger parallelogram is 10 m. What are the lengths of the bases of both parallelograms?

16. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
34.
The longer sides of a parallelogram are 6 ft. The longer sides of a similar parallelogram are 15 ft. The area of the smaller parallelogram is 27 ft2. What is the area of the larger parallelogram?
35.
Two similar parallelograms have areas 72 m2 and 32 m2. The height of the larger parallelogram is 12 m. What are the lengths of the bases of both parallelograms?

17. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
36.
The shortest side of a pentagon is 4 cm. The shortest side of a similar pentagon is 9 cm. The area of the larger pentagon is 243 cm2. What is the area of the smaller pentagon?
37.
How would increasing the length and width of a rectangle by a scale factor of 4 affect the area of the new figure? Explain.

18. GIVE ALL ANSWERS in radical form or rounded to 2 decimals.
38.
A stop sign is a regular octagon. Each side of the sign is 12.6 in. long. The area of the stop sign is 770 in.2 What is the length of the apothem?

19. Answers
ft2
ft2
m & 10m
ft2
m and 4 m
cm2
37. The area would be 16 times greater; the area ratio equals the scale factor squared. in
ft2 m2
in2
ft2 m2
ft2
yds
cm2
ft2 m2
yds2
units
units
units m2
in2
cm2
cm2
in2 m2
1. 34 ft cm m in in m in m ft ft2