Question

The perimeter of a rectangular section of a roof is 96 yards. The length is 18 yards. What equation could you use to find the width w of this

section of the roof?

Answer 1

w = 30 cm

Explanation:

perimeter of the rectangle = length x width

P = 2 (l + w)

96 = 2 (18 + w)

96 = 36 + 2w

60 = 2w

w = 60/2

w = 30 cm

Answer 2

36+2w=96

2w=96-36=60

w=60/2=30

Explanation:

perimeter is 96, that means length + length + width + width = 96.

say l is length and w is width.

since we know length is 18, 18+18+width+width = 96

36+2w=96

2w=96-36=60

w=60/2=30