Question

The perimeter formula for a rectangle is 21+ 2w, where

l is the length and w is the width
(8x - 1) in
(2x + 4) in

Answer 1

Perimeter = 20 x + 6

Explanation:

The Perimeter of rectangle = 2l + 2w

Where,

• l is length which is (8x - 1) in
• w is the width which is (2x + 4 ) in

Perimeter of rectangle = 2(8x -1)+ 2(2x + 4)

using Distributive property

Perimeter = 16 x - 2 + 4x + 8

Combine like terms

Perimeter = 16 x + 4x - 2 + 8

Perimeter = 20 x + 6

Answer 2

20x+6

Explanation:

The perimeter is

P= 2l + 2w

P = 2( 8x-1) + 2(2x+4)

Distribute

= 16x-2 + 4x+8

Combine like terms

= 20x+6