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Find the surface area of a sphere of radius 10.5 cm.

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Question

Find the surface area of a sphere of radius 10.5 cm. 

Sum
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Solution

Given

radius = 10.5cm 

Surface area = `4πr^2`

= 4 × `22/7 × (10.5)^2`

= 1386 cm2

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Chapter 21: Surface Areas and Volume of a Sphere - Exercise 21.1 [Page 8]

APPEARS IN

R.D. Sharma Mathematics [English] Class 9
Chapter 21 Surface Areas and Volume of a Sphere
Exercise 21.1 | Q 1.1 | Page 8
Nootan Mathematics [English] Class 10 ICSE
Chapter 17 Mensuration
Exercise 17C | Q 1. (i) | Page 390

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