find the answer of it.
Answers
Answer:
i don't know please sorry don't be sad
Answer:
If pi = 3
1) Arc length of the largest arc = 2 x pi x r
= 2 x 3 x 7 = 42 cm
Total arc lengths of the two small arcs (as same radius) = 2 x 2 x pi x r
= 2 x 2 x 3 x 3.5 / 2 = 21cm
Arc length of the remaining arc = 2 x pi x r = 2 x 3 x 7 / 2 = 21cm
Therefore , Total length of the boundary = 21cm + 21cm + 42cm = 84cm
2) Area of shaded region = Area of largest arc - Area of two smallest arcs + area of remaining arc
= 1/2 x pi x R^2 - 2 x 1/2 x pi x (r/2)^2 + 1/2 x pi x r^2
=1/2x3x7x7 - 2x1/2x3x3.5/2x3.5/2 + 1/2x3x7/2x7/2
= 73.5 - 9.1875 + 18.375
= 82.6875 cm^2