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lorasvet [3.4K]
3 years ago
10

Calculate the area of a circle with a diameter of 8cm. Show all your work.

Mathematics
2 answers:
vesna_86 [32]3 years ago
7 0

A≈50.27cm²

Using the formulas

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·82≈50.26548cm²

Talja [164]3 years ago
4 0

Answer:

16π cm^2

Step-by-step explanation:

The formula for the area of a circle is \pi r^{2}, r being the radius. The radius is always half of the diameter, so in this case, the radius is 4. 4^{2} is just 4 * 4 which is 16. Multiply that by π and you get 16π. Or, approximately 50.27 cm^2

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