An umbrella has 8 ribs which are equally spaced (see Fig.) . Assuming umbrella to be a flat circle of radius 45 cm, find the area between the two consecutive ribs of the umbrella.

Ncert solution class 10 chapter 12-8

Total ribs in umbrella=8

The radius of the umbrella is =45cm

The area between the two consecutive ribs=1/8π*r2

So, the area of the circle (A) = πr2 = (22/7)×(45)=6364.29 cm2

The area between the two consecutive ribs of the umbrella = A/n

6364.29/8 cm2

Or, The area between the two consecutive ribs of the umbrella = 795.5 cm2

Was this answer helpful?

  
   

0 (0)

Upvote (0)

Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *

*

*

BOOK

Free Class

Ask
Question