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krek1111 [17]
3 years ago
15

Which is the Area of a circle with a diameter of 7 units?

Mathematics
1 answer:
saul85 [17]3 years ago
7 0
Area of a circle = (3.14) * r^2
d = 7
r = 3.5

a = (3.14) * 3.5^2
a = (3.14) * 12.25
a = 38.47
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Answer:

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Step-by-step explanation:

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The volume of a cone is given by :

V=\dfrac{1}{3}\pi r^2 h\\\\V=\dfrac{1}{3}\times 3.14\times (20)^2\times 75\\\\V=31400\ \text{feet}^3

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