Question

The length of a rectangle is three times of its breath if the perimetre is 96 cm. Find the diametre of the rectangle.

Answer 1

Let the breadth of the recntagle be x.

3x -> Length

Perimeter = 3x + 3x + x + x = 8x

8x = 96cm

x = 96/8 = 12cm (Breadth)

Length = 12cm x 3 = 36cm

Diameter = $\sqrt{36^2+12^2}$ = $\sqrt{1296+144}$ = $\sqrt{1440}$ = 37.947331922... (Round off if needed.)