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Pavel [41]
3 years ago
12

Uca is designing a propeller system that consists of 3 blades, each of which is

Mathematics
1 answer:
zmey [24]3 years ago
4 0

Answer:

The weight of the three blades together is 134\ g

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is equal to

A=\pi r^{2}

we have

r=4\ in

assume

\pi=3.14

substitute

A=(3.14)(4)^{2}

A=50.24\ in^{2}

step 2

Find the area of the 3 blades

we know that

The area of the 3 blades represent a central angle of 60 degrees, so

its a 1/6 of the area of complete circle

A=50.24/6=8.37\ in^{2}

step 3

Find the weight of the three blades together to the nearest gram

(8.37\ in^{2})*(16\ g/in^{2})=134\ g

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Answer:

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