Question

if radius of sphere is double,whai will be surface area of sphere​

Answer 1

Answer:

The radius of a sphere is doubled. Radius is denoted as r. If 'radius' is doubled, then the radius can be written as 2r. Hence, the surface area of sphere will increase 4 times if the radius of that sphere is doubled

Step-by-step explanation:

The radius of a sphere is doubled.

Radius is denoted as r.

Surface area of sphere  

If ‘radius’ is doubled, then the radius can be written as 2r.

Replacing 2r in the area of surface formula i.e. , we get

Hence, the surface area of sphere will increase 4 times if the radius of that sphere is doubled.

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