The area of a circle whose radius is the diagonal of a square whose area is 16 square cm is -

Question: The area of a circle whose radius is the diagonal of a square whose area is 16 square cm is -Solution:Area of square = 16Side of square = √16 = 4Diagonal of square = 4√2So, the radius of the circle is 4√2 cmArea of circle = πr2= π(4√2)2= 32π