Question

Sharon is putting insulation in the new wall she just built. The wall is 18 ft. by 12 ft.How many square feet ofinsulation does she need?

Answer 1

Given that the dimensions of the wall are length = l = 18 ft and breadth = b = 12 ft.

Then the area of the wall is

A = l x b

On putting the values we have

A = 12 x 18 sq ft = 216 sq ft

Hence, the insulation will be needed of 216 sq ft.