SOLUTION: A cylindrical can of radius 7 cm and height 8 cm is open at one end. What is the external surface area of the can correct to 2 decimal places?

Question 1020409: A cylindrical can of radius 7 cm and height 8 cm is open at one end. What is the external surface area of the can correct to 2 decimal places?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
hi there,
Surface area = Pi x radius^2 + (Pi x diameter) x height.
Surface area = Pi x 7^2 + (Pi x 14)x 8
Surface area = 505.80 cm^2
The surface area of the can is found by
using the circumference of the can as
one side of the rectangle that is the
opened can. The other side is the height.
You then use Pi x r^2 for the end of the can.
Hope this helps :-)
RELATED QUESTIONS
An open box with base 14 cm by 18 cm and height 9 cm (external dimensions) is constructed (answered by Glaviolette)

An open box with base 14 cm by 18 cm and height 9 cm (external dimensions) is constructed (answered by greenestamps)

An open cylindrical drum has radius 42 cm and height 129 cm. What is the cost of painting (answered by ankor@dixie-net.com)

A can of soup has a radius of 3.3 cm and a height of 9.5 cm. What is the surface area of... (answered by TimothyLamb)

The radius of a cylindrical tennis ball can is (2x + 1) cm. The height of the tennis ball (answered by ewatrrr)

What is the surface area of a soft-drink can with a radius of 3.0 cm and a height of 12.0 (answered by Alan3354)

A cylindrical pop can has a diameter of 6 cm. Determine the surface area of the can if... (answered by stanbon)

Find the volume of the metal used in a hollow cylinder open at both ends whose external... (answered by lwsshak3)

A cylindrical vase has a radius of x inches . If the height is three less than the radius (answered by Fombitz)