It the radius of a sphere is 1 metre, the numerical value of the surface area is how much per cent of the numerical val­ue of its volume?

It the radius of a sphere is 1 metre, the numerical value of the surface area is how much per cent of the numerical val­ue of its volume?
1). 40%
2). 42.5%
3). 50%
4). 30%

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