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Jet001 [13]
3 years ago
11

The radius of a circle is 10 cm. What is the approximate area of the circle? What is the exact area of the circle? Show your wor

k.

Mathematics
1 answer:
faltersainse [42]3 years ago
5 0

First let's review the area formula for a circle.

Area=πr^2

Now that we know the radius, r is 10. The area is

10*10*π=100π

I will approximate π to 3.14 although you could do it more precise or less precise. The final answer will be 100*3.14=314 squared centimeter.

Any question you have about this just ask in the comment of this answer :)

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Answer:

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Step-by-step explanation:

Given:

The map key indicates that 4.5 cm is equivalent to 75 cm.

Now, to find the actual distance between the cities if the cities are 12.7 cm apart on the map.

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4.5:12.7 = 75:x.

<em>Changing into fractions.</em>

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<em>By cross multiplication we get:</em>

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<em>Dividing both sides by 4.5 we get:</em>

x=211.67

Therefore, the actual distance between the cities is 211.67 cm.

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