Ex 11.2, 8 - Chapter 11 Class 9 Surface Areas and Volumes

Last updated at August 14, 2026 by

Ex 11.2, 8 - A hemispherical bowl is made of steel 0.25 cm - Ex 11.2

 

Remove Ads
Teachoo · Class 9 Explore Class 9

Transcript

Ex 11.2, 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 = 2 2 = (2 22/7 5.25 5.25) cm2 = 173.25 cm2

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.

Many students prefer Teachoo Black for a smooth, ad-free learning experience.