Question

the wire is in the shape of a square of side 10 cm if the wire is relented into a rectangle of length 12 cm find square or the rectangle

Answer 1

Answer:

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

As length of wire is constant, perimeter of both shapes would be same,

⇒4a=2(l+b)

 ⇒40=2(12+b)

⇒b=18 cm

Area of square=a2=102=100cm2

Area of rectangle=lb=12×18=216cm2

⇒ Area of rectangle is greater by 116cm