Name_________________________________________________________
Chapter
8
Date __________
Test B
Write and solve an equation to find the missing dimension of
the circle.
1. Diameter = 13 ft
Answers
1.
2. Circumference = 44 in.
d
r
2.
3.
Find the circumference and area of the circle. Use 3.14 or
3.
22
for π .
7
4.
4.
30 ft
3.5 mi
5.
Find the perimeter and area of the semicircle.
5.
6.
6.
7. a.
10.5 in.
17 m
b.
7. You paint one wall in your room and leave a circle for your favorite
sports team’s logo. The diameter of the circle is 3 feet.
8.
See left.
8 ft
15 5 ft
f
15.5
a. How much tape do you need to outline the circle?
b. What is the area of the wall you paint? Round your answer to the
nearest hundredth.
8. Explain how you could estimate the diameter of a tree by measuring
the distance around the trunk of the tree.
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Big Ideas Math Red
Assessment Book
93
Name _________________________________________________________ Date _________
Chapter
8
Test B (continued)
Find the area of the figure.
Answers
9.
10.
9.
10.
11.
12.
Find the perimeter and area of the figure.
11.
12.
1m
1m
13. a.
2m
2 cm
4 cm
2 cm
b.
1 cm
5m
3 cm
5 cm
5 cm
c.
See left.
14. a.
13. An office manager needs to decide between two tables for the
b.
conference room. One is rectangular, 5 feet wide by 10 feet long.
The other is a circle with an 8-foot diameter.
a. Find the perimeter or circumference of each table.
b. Find the area of each table.
c. Which table can seat more people? Explain.
14. You take a bite out of a square cracker. The
3 cm
shape of the bite is a quarter circle.
a. Find the perimeter and area of the cracker
remaining.
3 cm
b. About how many bites can you get from
the entire cracker?
6 cm
94
Big Ideas Math Red
Assessment Book
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All rights reserved.