Ex 11.2, 2 (ii) - Chapter 11 Class 9 Surface Areas and Volumes

Last updated at April 16, 2024 by

Slide5.JPG

 

Go Ad-free

Transcript

Ex 11.2, 2 Assume = 22/7, unless stated otherwise. Find the surface area of a sphere of diameter: (ii) 21 cm Radius of sphere = r = /2 = (21/2) cm = 10.5 cm Surface area of sphere = 4 r2 = (4 22/7 10.5 10.5)cm2 = 1386 cm2

Davneet Singh's photo - Co-founder, Teachoo

Made by

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, Social Science, Physics, Chemistry, Computer Science at Teachoo.