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Find the surface area of a sphere of radius 14 cm - Mathematics

Find the surface area of a sphere of radius 14 cm

`["Assume "pi=22/7]`

 

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Solution

Radius (r) of sphere = 14 cm

Surface area of sphere = 4πr2

`=[4xx22/7xx(14)^2]cm^2`

= (4 x 44 x 14)cm2

= 2464 cm2

Therefore, the surface area of a sphere having radius 14 cm is 2464 cm2.

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APPEARS IN

NCERT Class 9 Mathematics Textbook
Chapter 13 Surface Area and Volumes
Exercise 13.4 | Q 1.3 | Page 225
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