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05.05.2020 •
Mathematics
Find the circumference of a circle whose area is 60 pi cm^2
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Ответ:
The circumference of the circle is 15.49π cm
Step-by-step explanation:
To solve this exercise we first have to calculate the radius of the circle, for this we will use the formula of area of a circle and we will clear the radius
a = area = 60π
r = radius
a = π * r²
r = √(a/π)
r = √(60π/π)
r = √60
r = 7.746 cm
now we use the formula to calculate the circumference of a circle
c = π * 2r
c = π * 2 * 7.746
c = 15.49π cm
The circumference of the circle is 15.49π cm
Ответ: