Page 237 - NUMINO_WB_6A

130_G6U10_G6U18_WB˙—» ¿º 2011.3.25 7:6 PM ˘ ` 14

130-P1-1

Solid Figures

Find the surface area of the solid figure.

6 cm

10 cm

2 cm

Step 1. Find the area of the base of the solid figure.

(area of base) (area of large circle) (area of small circle) 6 cm
3.14 3.14 2 cm

cm2

Step 2. Find the area of the side of the large cylinder.

(area of side) (circumference of large circle) 10 10 cm
2 3.14 10
cm2 2 3.14 cm

Step 3. Find the area of the side of the small cylinder.

(area of side) (circumference of small circle) 10 10 cm
2 3.14 10
cm2 2 3.14 cm

Step 4. What is the surface area of the solid figure?