Study Guide – Unit 9
Section 10-6
Section 10-7
Find the circumference AND area of both circles. Use 3.14 for pi and round to the nearest tenth.
3. Other than pi that is given, what is the only
measurement needed to find the area and
circumference of a circle?
Sections 11-1, 11-2, and 11-3
Name each solid and find the volume (round to the nearest tenth).
Section 10-8 Composite Shapes
Find the area of the shaded regions.
Section 11-4 Surface Area
Word Problems
1. Suppose a triangle has an area of 220 square meters. What is the measure of the height if the
base measures 20 meters?
(There are 144 sq in per 1 sq foot)
5. A baseball has a radius of about 1.5 inches. Home plate is 16 inches wide. If a baseball were
rolled across home plate, how many complete rotations would it take to cover the distance?
6. In what units are the following measured: a. circumference/perimeter, b. area, and c. volume?
Answer Key:
Section 10-6
1) 3 sq cm
2) 7.5 sq cm
3) 97.5 sq ft
4) 84 sq yd
5) 36 sq cm
Section 10-7
1) C=56.2 m, A=254.3 sq m
2) C=53.4 ft, A=226.9 sq ft 3) radius
Sections 11-1 through 11-3
1) rectangular prism, V=34.1 cubic ft 2) cylinder, V=68.4 cubic ft
3) triangular prism, V=98 cubic m
4) square pyramid, V=81 cubic in
Section 10-8 Composite Shapes
1) 65 sq cm 2) 114.25 sq cm
Section 11-4 Surface Area
1) 68.6 sq ft
2) 136 sq ft
Word Problems
1) 22m 2. 100.48 sq m
3) 2686 sq ft 4) $17.72
5) 2 rotations
6) a. units (in, ft, yd…), b. square units (sq in, etc), c. cubic units