1. Chapter 13 Class 9 Surface Areas and Volumes
  2. Serial order wise
  3. Ex 13.4

Ex 13.4, 3

Last updated at March 3, 2017 by

Ex 13.4, 3 - Find the total surface area of a hemisphere - Ex 13.4

  1. Chapter 13 Class 9 Surface Areas and Volumes
  2. Serial order wise
    3. Ex 13.4
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Transcript

Ex 13.4, 3 Find the total surface area of a hemisphere of radius 10 cm. (Use π = 3.14) Radius = r = 10 cm Total surface area of hemisphere = 3𝜋r2 = (3 ×3.14×10×10) cm2 = (3 ×314) cm2 = 942 cm2

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