Question

Find the perimeter and area of the shaded region in the
following figure​

Answer 1

Answer:

1/2(14) (7)

1(7) (7)

49

Answer 2

Answer:

we know that perimeter of the semi circle = 1/2×(2×pi×r) +2r

i.e. pi×r+2

also, area of semi circle is 1/2×pi×r^2

Step-by-step explanation:

here,in big semi circle, perimeter is (22/7×14) +2

=46 sq units

now, in small circle,perimeter is

(22/7×7)+2

=24 sq units

now, perimeter of shaded region will be 46-24 =22 sq units

now, area of shaded region will be area of big semi circle minus area of small semi circle

i.e. 1/2×22/7×14×14 - 1/2×22/7×7×7

=308-77

=271 sq. units