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CHAPTER 11 PRACTICE
A = bh
A=
bh
2
A=
(b1 + b2 )h
2
C =  d or 2 r
A =  r2
Find the two possible square roots of the number.
1. 121
2. 144
Evaluate the square root.
2.
9
4.  169
6.
3.
 81
7.
The area of a square is 400 square inches. Find the length of each side.
196
8. Evaluate 2( z  14) when z = 6.
Solve the equation.
9. 8 + k 2 = 57
10. w 2  13 = 212
11. List the first 15 perfect square numbers.
Approximate the square root to the nearest whole number.
12.
13.
28
66
Between ___ and ___ Closest to ___
Between ___ and ___ Closest to ___
14. Find the area of the parallelogram with the given base and height.
a. b = 6 yd, h = 7 yd
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b. b = 2.3 cm, h = 5 cm
Find the unknown base or height of the parallelogram.
15. A = 63 cm2
16. A = 14 in.2
17. A = 17 yd2
Find the unknown area, base, or height of the triangle.
18. A = __?_, b = 14yd, h = 9 yd
19. A = 24.5 m2, b = __?__, h = 7 m
Find the unknown area, base, or height of the trapezoid.
20. A = __?__, b1 = 6 yd, b2 = 7yd, h = 4 yd
Remember:
If Triangles or Trapezoids
You want to UNDO
The first thing you have to do
Is multiply by TWO
21. A = 90 cm2, b1 =__?__, b2 = 9 cm, h = 6 cm
2
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22. A = 675 ft , b1 = 24 ft, b2 = 30ft, h = __?__
23.
A trapezoid has an area of 980 square feet. One of the bases is 40 feet and the height is 35
feet. Find the other base.
24. Find the circumference of the wheel. Use 3.14 for  .
How far did the wheel travel if it went completely around 7 times?
25. Find the circumference of the circle. Use 3.14 for  .
a.
26. The circumference of a circle is 176 centimeters. Find the circle’s radius. Use 3.14 for  .
Round to the nearest hundredth.
27. Find the area of the circle with given radius or diameter. Use 3.14 for  .
a. r = 4 cm
b. r = 28 m
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3
c. d = 14 in
28. The diameter of a circular pond is 54 feet. Find the area of the pond. Round to the nearest
whole number.
Find the area of each circle. Use 3.14 for  .
29.
Find the radius and the diameter of the circle with the given area. Use 3.14 for  .
30. A = 254.34 ft2
Find the area of a circle with the given circumference. Use 3.14 for  .
31. C = 106.76 km
32. A round pizza has a diameter of 18 inches. A triangular slice with a height of 9 inches and a
base of 5 inches is cut from the pizza. How many square inches of pizza is left over?
33. Kyle drew a circle with a radius of 7 centimeters. Joey drew a circle with a radius of 49
centimeters. The area of Joey's circle is how many times as great as the area of Kyle’s circle?
Show how you know!
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4
34. A car drove 5 times around a circular track that has a diameter of 44 meters before it
broke down. How far did it travel? Use 3.14 for and round your answer to the nearest
tenth of a meter.