loghanmyers loghanmyers

11-07-2017
Mathematics

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Find the length of the radius of a sphere with a surface area of 5541.77 cm2.

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mreijepatmat mreijepatmat

11-07-2017

The area of a sphere: A = 4.π.R²

A= 5541.77 → 5541.77 = 4.π.R²

R² = (5541.77)/(4.π)
R² = 441; → R =√441; R = 21 cm

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