Question

Please help me and my friend need to do this home work

Answer 1

5cm

Explanation:

pr (perimeter for rectangle) = 2 x 7 + 2 x 3

pr = 14 + 6

pr = 20cm

a square has 4 equal sides

ss (side-length of square) = 20/4

ss = 5

Answer 2

Taking the breath as a Side of the Square...

The side lenght of spuare =3

All sides are equal in square