Question

Jeffrey drew the square field shown below, and then increased the length by 5 and decreased the width by 5. Help him write an expression to represent the area of the new field (the sides of the square are 20m feet).

Answer 1

A= lw
A= 25(15)

A= (s-5)(s+5)

These are some answers. I hope this helps.

Answer 2

Jeffrey drew a square field.

The length of the square field is 20 m.

Now he increased the length by 5.

So the new length is 20 + 5 = 25 m.

He also decreases the width by 5 m.

Hence the new width shall be 20 - 5 = 15 m.

The formula for the area of the rectangle is

= length × width

= 25 × 15

= 375 m²

The area of the rectangle after increasing the length by 5 m & decreasing the width by 5 is 375 m².