Question

From a circular card sheet of a radius 21cm, two circles of radii 2.1cm each

and a rectangle of length 3cm and breadth 1cm are removed. Find the area of the

remaining sheet. 4)​

Answer 1

Answer:

1355.28 sq. cm

Step-by-step explanation:

Area of the circular card sheet = (22/7)* 21*21= 1386 sq. cm

Area of 2 circular sheets of radii 2.1 cm each = 2* (22/7)* 2.1 * 2.1= 27.72 sq. cm

Area of rectangle= 3*1= 3 sq. cm

Thus,

Area of remaining sheet = 1386 - ( 27.72 +3)= 1355.28 sq.cm