Question

the perimeter of a rectangle is equal to the perimeter of the square of side 15cm.if the side of the rectangle is 20cm long.what is its breath?

Answer 1

hello!

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... :)

Answer 2

perimeter of the square is
=4×side
=(4×15) cm
=60 cm
we got perimeter of rectangle=60cm
length of rectangle=20cm
breadth=x cm
Accordingly,
2 (20+x)=60
⇒40+2x=60
⇒2x=20
⇒x=10
∴ x =10
∵Breadth of the rectangle = 10 cm