Question

The diagram below shows a rectangular sheet of cardboard with 2 circular

pieces cut from it. The radius of each of the circular pieces is 3cm. Find the
area of remaining card.

Answer 1

2 =

3cm =


Explanation - solve the function operation

Answer 2

Two sector of 90 degree cut out(90*2=180 degree) means semicircle

perimeter of circle= 2πr

= 2*22/7*3=18.85 cm

perimeter of semicircle=18.85/2=9.42 cm approx