A child in Chennai makes a clay model: a solid hemisphere of radius 7 cm with a flat base. The whole outer surface (curved part plus flat base) is to be decorated with glitter. Find the total area to be decorated (take π = 22/7). (CSA = curved surface area, TSA = total surface area)

Question

Accepted Answer

462. Total = TSA of solid hemisphere = 3*π*r^2 = 3 * (22/7) * 7 * 7 = 3 * 22 * 7 = 462 cm^2.

A child in Chennai makes a clay model: a solid hemisphere of radius 7 cm with a flat base.
The whole outer surface (curved part plus flat base) is to be decorated with glitter.
Find the total area to be decorated (take π = 22/7). (CSA = curved surface area, TSA = total surface area)

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Surface Area of a Sphere practice

A child in Chennai makes a clay model: a solid hemisphere of radius 7 cm with a flat base.The whole outer surface (curved part plus flat base) is to be decorated with glitter.Find the total area to be decorated (take π = 22/7). (CSA = curved surface area, TSA = total surface area)

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Surface Area of a Sphere practice

A child in Chennai makes a clay model: a solid hemisphere of radius 7 cm with a flat base.
The whole outer surface (curved part plus flat base) is to be decorated with glitter.
Find the total area to be decorated (take π = 22/7). (CSA = curved surface area, TSA = total surface area)