Discussion of Question with ID = 044 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.



A largest possible circle is cut out of a square sheet having a side of 18 meter. What is the area of the hollow sheet?


324 - 81π sq. m.


18 + 162π sq. m.


18 + 6561π sq. m.


324 - 40.5π sq. m.

Ans: a

The radius of the circle is 18/2 = 9 m. So its area = π × 9 × 9 = 81π sq. m. The left area is $18^2 - 81$π = $324 - 81$π sq. m.

Comments and Discussion