1. Chapter 1 Section 1.7
Area and Perimeter

2. Warm-Up Find the distance between (-2, 0) and (4, 2)
A and B are complementary angles. Find mA and mB if mA = 7x+1 and mB = 4x+1

3. Find the Perimeter and Area of Each Figure
Rectangle: A = lw, P = 2l + 2w
P = 2(13) + 2(7) =
= 40 units
Area = 13(7)
= 91 square units

4. Find the Perimeter and Area of Each Figure
Square: A = s2, P = 4s
P = 4(8)
= 32 units
Area = (8)2
= 64 square units

5. Find the Perimeter and Area of Each Figure
Triangle: A = (½)bh, P = a + b + c
P =
P = 36 units
Area = (½)(16)(6)
Area = 48 square units

6. Find the Perimeter and Area of Each Figure
Circle: A = r2, C = 2r
C = 2(5)
C = 10 units
Area = (5)2
Area = 25 square units

7. Find the Perimeter and Area of Each Figure
Square: A = s2, P = 4s
P = 4(12)
P = 48 units
Area = (12)2
Area = 144 square units

8. Find the Perimeter and Area of Each Figure
Triangle: A = (½)bh, P = a + b + c
P =
P = 60 units
Area = (½)(24)(10)
Area = 120 square units

9. Find the Perimeter and Area of Each Figure
Triangle: A = (½)bh, P = a + b + c
P =
P = 27 units
Area = (½)(10.5)(6)
Area = 31.5 square units

10. Find the Perimeter and Area of Each Figure
Circle: A = r2, C = 2r
C = 2(7)
C = 14 units
Area = (7)2
Area = 49 square units

11. Find the Perimeter and Area of Each Figure
Rectangle: A = lw; P = 2l + 2w
P = 2(2.2) + 2(6.4)
P =
P = 17.2 units
Area = 2.2(6.4)
Area = square units

12. Find the area of the figure described
Rectangle with length of 12.3 centimeters and a width of 5 centimeters.
A = lw
A = 12.3(5) = 61.5 cm2
Triangle with height 7 inches and base 14.4 inches
A = (½)bh
A = (½)(14.4)(7) = 50.4 in2
Circle with diameter 40 feet
r = 20 feet
A = r2
A = (20)2 = 400

13. Find the Area of the Figure
s = 6
Square: A = s2
Area = (6)2
Area = 36 square units
s = 6

14. Find the Area of the Figure
Circle: A = r2
Area = (3)2
Area = 9 square units
r = 3

15. Find the Area of the Figure
Triangle: A = (½)bh
Area = (½)(6)(4)
Area = 12 square units
h = 4
b = 6