Step-by-step explanation:
x=1
=2^3×1-1
=8×1-1
=8-1
=7
Answer:
let the width be 'x'
length = 2x
Area = 72 in square
(2x)(x)= 72
2x^2=72
x^2=36
x=6
perimeter = 2(l+b)
=2(2x+x)
=2(3x)
=2(3*6)
=2(18)
=36 inches
therefore the answer is option D
Hope it helps.............
