Question

A square is divided into four congruent rectangles.The perimeter of each of the four congruent rectangles is 25 units.How many units are there in the perimeter of the square?

Answer 1

there are 4 units of 10 , so your answer is 4(10) = 40

Answer 2

let s = one side of the square
so s/4 = the shorter side of one of the rectangles while s = the longer side of a rectangle

10s/4 = the perimeter of one rectangle so
10s/4 = 25
s = 10
4s = perimeter of the square
4(10) = 40 = perimeter of the square = your answer