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Find the surface area of the sphere whose radius is $35 cm$ .

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15400 {cm}^{2}

1540 {cm}^{2}

154 {cm}^{2}

15.400 {cm}^{2}

answer is A.

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Detailed Solution

Given that, the radius of the sphere,

r = 35 cm

.
The formula for the surface area of sphere is given by,
Surface area of sphere

= 4 π r^{2},

where r is its radius.
So, after substituting the value of all the dimensions in the formula we get,

4 π r 2 = 4 × 227 × (35) 2 ⇒ 4 π r 2 = 15400

Therefore, the surface area of the sphere is

15400 {cm}^{2} .

Hence option (1) is correct.

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