Question

The length of a rectangle is 10 in. What is the perimeter of the rectangle if the width is 7 in. less than the length? a. 26 in. c. 30 in. b. 13 in. d. 54 in.

Answer 1

Option A
`P=26\ in`

Explanation:

we know that

The perimeter of the rectangle is equal to

`P=2(L+W)`

we have

`L=10\ in`

`W=L-7` -----> equation A

substitute the value of L in the equation A

`W=10-7=3\ in`

Find the perimeter

`P=2(10+3)=26\ in`