Note: Check more Case Based Questions for - Surface Area and Volumes Class 10
This video is only available for Teachoo black users
This video is only available for Teachoo black users
This video is only available for Teachoo black users
This video is only available for Teachoo black users
This video is only available for Teachoo black users
This video is only available for Teachoo black users
Note: Check more Case Based Questions for - Surface Area and Volumes Class 10
Support Teachoo in making more (and better content) - Monthly, 6 monthly, yearly packs available!
Answer3.0/5
10
amitnrwGenius34.6K answers304.8M people helped
Given : 2 hemispherical domes
To Find : How much cloth material will be required to cover 2 big domes each of radius 2.5metres
a) 75m2
b) 78.57m2
c) 87.47m2
d) 25.8m2
Solution:
To Cover Dome we need to cover Curved surface area only with cloth
as base is on ground
CSA of Hemisphere = 2 πr²
r = 2.5 m
CSA of one Dome = 2 π(2.5)²
CSA of two Domes = 2 x 2 π(2.5)²
= 25π m²
π = 22/7
= 25 x 22/7
= 78.57 m²
78.57 m² cloth material will be required to cover 2 big domes each of radius 2.5metres
option b is correct