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bhagwansingh
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Asked: 2021-08-25T13:05:59+05:30 In:

Find the surface area of a sphere of radius: (i) 10.5cm Q.1(1)

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Please guide me the best way for solving the question of class 9th math of Surface areas and Volumes chapter of exercise 13.4    of math of question no.1(1) What is the best way for solving this question, please guide me Find the surface area of a sphere of radius: (i) 10.5cm

best math ncert solutionexercise 13.4 ncertncert class 9th solutionsurface areas and volumes ncert
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    1. Guru

      Formula: Surface area of sphere (SA) = 4πr2

      Radius of sphere, r = 10.5 cm

      SA = 4×(22/7)×10.52 = 1386

      Surface area of sphere is 1386 cm2

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