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loris [4]
3 years ago
14

A circle has a diameter of 10 cm. What is the best approximation of its area?

Mathematics
2 answers:
Darina [25.2K]3 years ago
7 0
Recall that the area of a circle can be determined by the formula pi * r(squared). Since we are given the diameter, we can divide it by 2, giving us the radius. 10 / 2 = 5 Now that we have all of our values, we substitute them into the formula for area. 3.14 * 5(squared) This simplifies to 3.14 * 25 Which gives us 78.5 I hope that helps.
Nutka1998 [239]3 years ago
6 0
I would say <span>78.5
hope that helps!!</span>
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mixer [17]
4a + 6b = 10
2a - 4b = 12...multiply by -2
----------------
4a + 6b = 10
-4a + 8b = - 24 (result of multiplying by -2)
------------------add
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b = -14/14
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4 years ago
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Jobisdone [24]

9514 1404 393

Answer:

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Step-by-step explanation:

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