Subject :NSO Class : Class 8
PQRS is a square, 4 equal circles are just touching each other whose centres are the vertices P, Q, R and S of the square. What is the ratio of the shaded to the unshaded area within square?
(A) 8/11
(B) 3/11
(C)5/11
(D) 6/11
Ans 1:
Class : Class 9
good qustion