Question

A rectangle has an area of 72 in². The length and the width of the rectangle are changed by a scale factor of 3.5. What is the area of the new rectangle?

Answer 1

ANSWER

$882 \: {in}^{2}$

EXPLANATION

The area of the original rectangle is 72 in².

If the length and the width of the rectangle are changed by a scale factor of 3.5.

Then the area will change by

${3.5}^{2} = 12.25$

To get the area of the new rectangle is we multiply the area of the original rectangle by 12.25.

This implies that,the area of the new rectangle is

$3.5 \times 72 = 882 \: {in}^{2}$

Therefore the area of the new rectangle is 882 square inches.