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timofeeve [1]
2 years ago
11

find the area of the shaded regions below. give your answer as a completely simplified exact value in terms of π (no approximati

ons)

Mathematics
1 answer:
Marta_Voda [28]2 years ago
3 0

Answer:

Step-by-step explanation:

the area of the hemisphere is  1/2 \pir^{2}

the radius is 1/2 the diameter,

the diameter is also the hypotenuse of the isosceles triangle

d^{2} = 4^{2}+4^{2}

d^{2} = 32

d =\sqrt{32}

r = 1/2\sqrt{32}

1/2\pi(1/2\sqrt{32})^2

1/2\pi(1/4*32)

(32/8 )*\pi

4\pi ( the entire upper hemisphere )

area of the triangle is  1/2* 4 *4 = 8

then the exact area of the parts of the circle would be

4\pi - 8    

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