Question

A rectangle is 12 feet long and 5 feet wide. If the length of the rectangle is increased by 25% and the width is decreased by 20%, what is the change in the area of the rectangle?

The change in the area of the rectangle is
square feet.

Answer 1

0

Explanation:

got it right

Answer 2

Original area was as follows
Area=L*W
A=12*5
A=60 sq ft

If the length of 12 is increased by 25% do the following.

12*0.25=3

12+3=15

If the width of 5 is decreased by 20% do the following.

5*0.2=1

5+1=6

With these calculation we can now determine the new area

Area=L*W
A=15*6
A=90 sq ft

With this information we now know that with the increase in length and the decrease in width the new rectangle is 30 sq ft larger than the original rectangle.