The surface area of a sphere is π sq. cm. If it's radius is doubled, by how much does its surface area increase?

Doubling the radius of a sphere will increase its surface area 4 times

Step-by-step explanation:

The surface area of a sphere with radius r is given by the formula:

Doubling the radius means: r=> 2r

Putting the new radius the new surface area will be:

The new surface area with double radius is 4 times of the old surface area with r.

Hence,

Doubling the radius of a sphere will increase its surface area 4 times

c. (3,2,6) is the answer.

your question is incomplete, write all the numbers in the sequence that it tells you.  

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