arwolfgang arwolfgang

02-05-2017
Mathematics

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If the circumference of a spherical object is 31.40 cm, what is the surface area of the object? Use 3.14 for pi.

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egenriether egenriether

02-05-2017

Circumference is 2*pi*r. From your circumference we get the radius of 5. Surface area of sphere is 4*pi*r^2 which gives 314 cm^2 for area

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