Question

A rectangle has length 72 cm and width 56 cm. The other rectangle has the same area as this one, but its width is 21 cm.What is the length of the second rectangle?

Answer 1

Answer: 192 cm

Explanation:

Rectangle 1

A = L * w

   = 72 * 56

   = 4032

Rectangle 2

A = L * w

4032 = L * 21

÷21         ÷21

 192  =  L