Problema Solution
Mr. Jimenez is cutting a hole in a kitchen counter top so that he can install a sink. The rectangular sink is 36 inches long and 18 inches wide. He needs to make the hole smaller than the sink by 0.25 inch on all sides. How much less is the area of the hole than the area of the sink? Round to the correct number of significant digits.
Answer provided by our tutors
the dimensions of the rectangular hole will be
the length:
l = 36 - 2*0.25
l = 35.5 in
the width:
w = 18 - 2*0.25
w = 17.5 in
since the area = length*width the difference in the area is:
35*18 - 35.5*17.5 = 8.75 in^2