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

User YMMD
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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

User Yenchi
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