A hollow spherical shell has outer radius 7 cm and inner radius 6.3 cm. Find the total area of both the outer and inner curved surfaces (take π = 22/7). Round to 2 decimal places.

Question

Accepted Answer

1114.96 cm^2. Outer SA = 4*(22/7)*49 = 616 cm^2. Inner SA = 4*(22/7)*6.3*6.3 = 4*(22/7)*39.69 = 498.96 cm^2. Total = 616 + 498.96 = 1114.96 cm^2.

A hollow spherical shell has outer radius 7 cm and inner radius 6.3 cm.
Find the total area of both the outer and inner curved surfaces (take π = 22/7).
Round to 2 decimal places.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Surface Area of a Sphere practice

A hollow spherical shell has outer radius 7 cm and inner radius 6.3 cm.Find the total area of both the outer and inner curved surfaces (take π = 22/7).Round to 2 decimal places.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Surface Area of a Sphere practice

A hollow spherical shell has outer radius 7 cm and inner radius 6.3 cm.
Find the total area of both the outer and inner curved surfaces (take π = 22/7).
Round to 2 decimal places.