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If the radius of a sphere is increased by 5 cm so that the area of the sphere obtained is increased by 400pi square cm. What was the radius before the increase

Respuesta :

AlannaWells

Answer:

The answer is 314cm²

the formula for the sphere area of a sphere is:

A= 4TT²

A = 4x3.14x5²

first solve for exponents

A = 4x 3.14x25

then multiply

A = 314cm²

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