Question

A wire is in the shape of a square of perimeter 64 cm. A rectangle is formed with this wire such that its length is 20 cm. Then, the area of the rectangle is_____

With workings also please

Answer 1

Answer:

240 cmpleas mar as brainlist

Answer 2

Let the breadth of the rectangle be b.

As the length of wire remain constant in this process perimeter of square will be equal to perimeter of rectangle,

64=2(l+b)

⇒ 64=2(20+b)

⇒ 32=20+b

⇒ b=12cm

So, area of the rectangle will be product of length and breadth,

A=l×b

⇒A=20×12

⇒A=240cm

2