The aspect ratio of the rectangle is 5: 3 and the perimeter is 64. Find the largest side.

The aspect ratio of the rectangle is 5: 3 and the perimeter is 64. find the larger side
As you know, in a rectangle, opposite sides are equal.
Aspect ratio = 5: 3, and in a rectangle there are 4 sides, so two of them will be 5 parts each, the other 2 will have 3 parts.
Hence, total parts:
5 + 5 + 3 + 3 = 16.

Find out how much is in one part:
64: 16 = 4.
Find out how much the big side will be:
5 * 4 = 20.
Answer: 20.