- P¼ 2 lþ 2 w
¼ 2 20 þ 2 8
¼ 40 þ 16
¼56 in.
- C¼
5
9
ðF 32 Þ
¼
5
9
ð 50 32 Þ
¼
5
9
18
¼ 108
- V¼3.14r^2 h
¼3.14 32 19
¼3.14 9 19
¼536.94 cubic feet
- F¼0.004As^2
¼0.004 20 352
¼0.004 20 1225
¼98 pounds
- A¼ 6 s^2
¼ 6 122
¼ 6 144
¼864 square inches
64 LESSON 7 Using Formulas