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.

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

add an image, and i will answer

step-by-step explanation:

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a