Question

also plz solve this​

Answer 1

Answer:

D=7

R=7/2

area of circle =22/7 ×7/2^2

=38.5

area of semicircel is half of circle

so 38.5/2

=19.25

Explanation:

mark it as brainlist answer

Answer 2

77cm is the right ans.

The area of semicircle is=1/2πr²

so,

1/2×22/7 (7)²cm

=77