Question

The perimeter of a rectangle is equal to the perimeter of the square of side 15cm. if the side of the rectangle is 20 cm long, what is the breadth ?​

Answer 1

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Perimeter of square,

=4×side

=(4×15)cm

=60cm

Perimeter of square=perimeter of rectangle

perimeter of rectangle=60cm

length of rectangle=20cm

breadth=x cm

perimeter of rectangle=2 (length+breadth)

BTP,

2 (20+x)=60

=>40+2x=60

=>2x=20

=>x=10

Breadth of the rectangle is 10 cm

hope it helps... :)