1. Chapter 11 Class 9 Surface Areas and Volumes
  2. Serial order wise
  3. Examples
Check sibling questions

Question 3 - Examples - Chapter 11 Class 9 Surface Areas and Volumes

Last updated at Dec. 13, 2024 by Teachoo

Transcript

Question 3 Savitri had to make a model of a cylindrical kaleidoscope for her science project. She wanted to use chart paper to make the curved surface of the kaleidoscope. (see Fig ). What would be the area of chart paper required by her, if she wanted to make a kaleidoscope of length 25 cm with a 3.5 cm radius? You may take = 22/7. Kaleidoscope is of form cylinder Area of chart paper required = Curved Surface Area of cylinder = 2 rh = 2 22/7 3.5 25 cm2 = 550 cm2 Thus, Area of chart paper required = 550 cm2

  1. Chapter 11 Class 9 Surface Areas and Volumes
  2. Serial order wise

    3. Examples

    Area of Cube and Cuboid →
Area of Cube and Cuboid →
Chapter 11 Class 9 Surface Areas and Volumes
Serial order wise

About the Author

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo