Question

Find the area of the shaded region in each of the following figures (Hint: d/2+d+d/2 =42) d=21​

Answer 1

Answer:

259.875²

Step-by-step explanation:

Area of the bigger circle

= $\pi r^2$

= 22/7 x 21/2 x 21/2

= 346.5m²

Area if the smaller circle:

= $\pi r^2$

= 22/7 x 10.5/2 x 10.5/2

= 86.62500m²

Area of the shaded region:

= 346.5 - 86.62500

= 259.875²

Answer 2

Answer:

Answer is 42cm

Step-by-step explanation:

Area of the shaded reason=Area of square-area of semicircles

Area of square ABCD 14×14=196cm

Area of 2 semicircles=area of one semicircle=

7

22

×7×7=154cm

2

Area of shaded region = 196-154=42cm