Math Word Problems Demystified - A Self Teaching Guide

4. P¼ 2 lþ 2 w

¼ 2  20 þ 2  8

¼ 40 þ 16

¼56 in.

5. C¼

5

9

ðF
 32 Þ

¼

5

9

ð 50 
 32 Þ

¼

5

9

 18

¼ 108

6. V¼3.14r^2 h

¼3.14 32  19

¼3.14 9  19

¼536.94 cubic feet

7. F¼0.004As^2

¼0.004 20  352

¼0.004 20  1225

¼98 pounds

8. A¼ 6 s^2

¼ 6  122

¼ 6  144

¼864 square inches

64 LESSON 7 Using Formulas