Question

in the circle of radius 28 cm cut out two circle of radius 7 cm and a rectengle of 4 cm x 3cm find area of remaning area​

Answer 1

Answer:

area of the circle of radius 28 cm is π28^2

area of the circle of radius 7 cm is π7^2

area of the rectangle =4cm×3cm=12 sq cm

so remaining area

{π.28^2-(2.π.7^2+12)}sq cm

={π.28^2-(2.22.7.7/7+12)}sq cm

={22.28.28/7-(308+12)}sq cm

={88.28-320}sq cm

=(2464-320)sq cm

=2144 sq cm