Question

The perimeter of a rectangle is 72 centimeters. The base is 2 times the height. What are the dimensions of the rectangle

Answer 1

the perimeter of rectangle is 2(base + height)
let the height be = x
and the base be = 3x

now perimeter = 2(x + 3x) = 72
x = 8x = 72
x = 72/8
x = 9

height = 9...
base = 9 * 3 = 27...

Answer 2

sorry... base = 2*9= 18... 3 is by mistaken ...

Answer 3

2B + 2H = Perimeter
2B + 2H = 72
B = 2H

2(2H) + 2H = 72
4H + 2H = 72
6H = 72
H = 12

B = 2H
B = 2(12)
B = 24

check..
2B + 2H = 72
2(24) + 2(12) = 72
48 + 24 = 72
72 = 72 (correct)