Question

Math math math math math

Answer 1

Answer:

A: 9

Perimeter= 2 x (L+ B) =72

2 x (3x + x) = 72

2 x 4x = 72

8x = 72

x = 72/8 = 9

x = 9

Step-by-step explanation:

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Answer 2

Answer:

Hence, the width of rectangle is 9feet.(A)

Step-by-step explanation:

given, the perimeter of rectangle is 72feet

let the width of rectangle be x then its length is 3x, Now

Perimeter of rectangle=2(l+b)

72=2(3x+x)

72=2(4x)

72=8x

x=9