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

Ex 13.4, 8

Last updated at March 3, 2017 by

Ex 13.4, 8 - A hemispherical bowl is made of steel 0.25 cm - Ex 13.4

  1. Chapter 13 Class 9 Surface Areas and Volumes
  2. Serial order wise
    3. Ex 13.4
    Ex 13.5 →
Ask Download

Transcript

Ex 13.4, 8 A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5 cm. Find the outer curved surface area of the bowl. We need to find outer curved surface area hence we need to be find Outer Radius Given Inner radius = 5 cm Hence Outer radius = r = 5 + 0.25 cm = 5.25cm ∴ Outer curved surface = 2𝜋𝑟2 = (2×22/7×5.25×5.25) cm2 = 173.25 cm2

Chapter 13 Class 9 Surface Areas and Volumes
Serial order wise

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 7 years. He provides courses for Mathematics and Science from Class 6 to 12. You can learn personally from here https://www.teachoo.com/premium/maths-and-science-classes/.
Jail