Question

find the surface area of a sphere of radius10.5cm​

Answer 1

Answer:

(i) r=10.5cm

SA=4πr^2  

   =4πr  ^2

   =4×22/7   *   10.5/10    *      10.5/10

   =88*15*105 /    100

   =  1386 cm^2

hope it helps

tq./

Step-by-step explanation:

Answer 2

Given,

Radius r= 10.5 cm

surface area of a sphere of radius 'r'= 4πr^2

= 4 x 22/7 x 10.5 x 10.5

= 1386 cm^2

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