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Find the surface area of a sphere of radius 5.6 cm - Mathematics

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Find the surface area of a sphere of radius 5.6 cm

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

 

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Solution

Radius(r) of sphere = 5.6 cm

Surface area of sphere = 4πr2

`=[4xx22/7xx(5.6)^2]cm^2`

= (88 x 0.8 x 5.6)cm2

= 394.24 cm2

Therefore, the surface area of a sphere having radius 5.6 cm is 394.24 cm2.

Concept: Surface Area of a Sphere
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APPEARS IN

NCERT Class 9 Maths
Chapter 13 Surface Area and Volumes
Exercise 13.4 | Q 1.2 | Page 225

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