Question

The area of a rectangle is 100 square feet, and its length is 40 feet. Find the width of the rectangle
Incorrect solution:
A= 2l + 2w
100= 2 x 40 + 2w
100= 80 + 2w
20= 2w
10=w
Find the correct solution

Answer 1

write all the given down first

Answer 2

A=area=100
L=length=40ft
W=width=?
area=A=L x W
100=40 x W
now rearrange for W

Answer 3

can u rearrange for W?

Answer 4

the solution that they give u above is incorrect because when they state
A=2L+2W <-- this formula represents perimeter

Answer 5

A= L x W