Question

a square is divided into 4 rectangles the perimeter of a rectangle is 30 cm calculate the perimeter of a square

Answer 1

Perimeter of rectangle=30
=)2(l+b)=30
=)l+b=30/2
=)l+b=15
Since the square is divided into4 rectangles and the side of square are equal.So,length will be 4 times the breadth.
Let b=x
L=4x
l+b=15
4x+x=15
5x=15
x=3
b=3
l=12
So all sides of the square are 12 cm
Perimeter of square=4×12
48cm