10.2.2 Surface Area of Pyramids and Cones − Worksheet
Example 1: Find the lateral area and surface area of each regular pyramid. 1. 2.
12 cm
15 ft
16 ft
8 cm
16 ft
3. a regular triangular pyramid with base edge length 15 in. and slant height 20 in.
Example 2: Find the lateral area and surface area of each right cone. Give your answers in terms of π . 4. 5.
24 in.
22 m
25 in.
14 m
6. a cone with base area 36 π ft 2 and slant height 8 ft
Example 3: Describe the effect of each change on the surface area of the given figure. 7. The dimensions are cut in half. 8. The dimensions are tripled.
15 cm
10 in.
9 cm
6 in.
6 in.
194
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