Question

13. The perimeters of a rectangle and square are same. If the length and breadth of the rectangle is
12 cm. and 6 cm., what is the length of side of the square?
(a) 36 cm.
(b) 18 cm.
(c) 9 cm.
(d) 6 cm.​

Answer 1

Answer:

Let l,b be the length and breadth of the rectangle and s be the side of the square

Given that

⇒2(l+b)=4s

⇒2(10+8)=4s

⇒2×18=4s

⇒4s=36

⇒s=9

So, Area of square =s

2

⇒ Area of square =9

2

⇒ Area of square =81 sq. cm