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28.07.2019 •
Mathematics
#20-9: find the are of a circle that has a diameter of 20.2 inches. use 3.14 for pi and round to the nearest hundredth.
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Ответ:
320.31 in²
Step-by-step explanation:
The area of a circle can be computed from ...
A = (π/4)d²
Filling in the numbers and doing the arithmetic, we get ...
A = (3.14/4)(20.2 in)² ≈ 320.31 in²
Ответ:
320.47in² or 320.47 (to the nearest hundredth)
Step-by-step explanation:
The area of a circle that has a diameter of 20.2 inches is 320.47in².
Formulas: A=πr2 and d=2r
A=1/4πd2=1/4·π·20.22≈320.47387in²
Ответ:
The answer is C
Step-by-step explanation:
I got the answer right on Edgenuity