Question

The area of a rectangle is 90 square inches. Find the length and width so that the rectangle has the least perimeter. Assume that the length and width are both whole numbers​

Answer 1

Note: given x and y have the same product the smallest sum of x and y are if they are closer together
Thus finding the factors of 90: 1, 2,3,5,6,9,10,15,18,30,45,90. So the closest are 9 and 10
There fore 19+19=38