Discussion of Question with ID = 046 under Areas

This is the discussion forum for this question. If you find any mistakes in the solution, or if you have a better solution, then this is the right place to discuss. A healthy discussion helps all of us, so you are requested to be polite and soft, even if you disagree with the views of others. The question and its current solution has also been given on this page.

Advertisement

Question

What is the ratio of the perimeter of a circle of radius 4 units to that of a square having the circle's diameter as its side?

A

π : 4.

B

π : 2.

C

4 : 3.

D

4 : π.

Soln.
Ans: a

Let X be the radius of the circle, so the side of the square is 2X. The ratio of the perimeters = ${2 × π × X}/{4 × (2X)}$ = π/4.


Comments and Discussion