Example 9 - Chapter 9 Class 7 Perimeter and Area

Last updated at August 8, 2026 by

Example 9 - The radius of a circular pipe is 10 cm. What length of - Examples

part 2 - Example 9 - Examples - Serial order wise - Chapter 9 Class 7 Perimeter and Area

Remove Ads

Transcript

Example 9 The radius of a circular pipe is 10 cm. What length of a tape is required to wrap once around the pipe (Ļ€ = 3.14)?Here, Length of tape required = Circumference of pipe Radius of pipe = r = 10 cm Circumference of pipe = 2šœ‹r = 2 Ɨ 3.14 Ɨ 10 = 2 Ɨ 314/100 Ɨ 10 = 2 Ɨ 314/10 = 628/10 = 62.8 cm āˆ“ Length of tape required = 62.8 cm Hence, 62.8 cm of tape is required to wrap once around the pipe

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.