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Find the surface area of a sphere whose diameter is equal to 98 cm.
Question

Find the surface area of a sphere whose diameter is equal to 98 cm.

A.

29,256 cm²

B.

39,204 cm²

C.

30,184 cm²

D.

33,284 cm²

Correct option is C

Given:

Diameter of the sphere = 98 cm.

Formula Used:

Surface Area = 4πr2

Solution:

r = 982=49 cm\frac{98}{2} = 49 \text{ cm}​​

Surface Area of sphere = 4π(49)2 

4×227×49×494\times \frac{22}{7}\times 49 \times 49  

= 30184 cm2

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