Question

in the given figure triangle ACB is the semi circle find the area of shaded region given that AB = 42 CM ​

Answer 1

Step-by-step explanation:

area of semi circle =1/2

$1 \div 2\pi \: r ^{2}$

so ab is diameter so r =21

1/2×22/7×21×21

=693cm^2

Answer 2

Step-by-step explanation:

area of semi circle =1/2

1 \div 2\pi \: r ^{2}1÷2πr2

so ab is diameter so r =21

1/2×22/7×21×21

=693cm^2