required area = area of the square
the area if two semicircles side of square is 7cm radius of semicircle is (7/2) cm area
of the square is 49 cm area of one semicircle is (Tm(7/2)^2)/2
which is equal to 19.25cm but there are 2 semicircles
so 19.25x2 38.5
so required area is 49 -38.5 =10.5cm