Question

a) Two semicircular parts are removed from a semicircular disc, as shown in Fig 7.
() Find area of the shaded region.
(ii) If a thread is to be placed around the boundary of the shaded region, find the
length of the thread required.

​

Answer 1

Answer:

100π

Step-by-step explanation:

area of semicircle is π\2×r^2

by subtract big circle by small circles

Answer 2

Answer:

I hope you understand

Step-by-step explanation:

make me brain least