Question

As shown in the figure, a quarter of a circle with a radius of 1 cm is cut at each corner of the 4 cm side square and a circle with a diameter of 2 cm is also deducted. Find the area of ​​the remainder of the square.​

Answer 1

Area of 4 quarter circle=area of 1 whole circle.

total area of square=16

area of 4 quarter circle=π(1)(1)=π

for the whole circle diameter is 2cm therefore radius will be 1cm.

Area of whole circle=π

therefore shaded region=16-2π sq.cm

Answer 2

See the above attached attachment..

Hope it helps