Question

If the ratio of the side of a rectangle made by turning a 42 cm long circular wire is 5: 6, then the short side of the rectangle will be​

Answer 1

Let the sides of the rectangle be 6x cm and 5x cm.

Perimeter of the rectangle = Circumference of Circle

⇒2(6x+5x)=2×722×21

⇒22x=132

⇒x=6

∴ The sides of the rectangle are 36cm and 30cm.

∴ Area of the rectangle =36×30=1080cm2