Question

find the curved surface area and total surface area of a right circular cylinder whose height is 15 cm and the radius of the base is 7 cm​

Answer 1

`CSA = 660cm^2` --- Curved Surface Area

`TSA = 968cm^2` --- Total Surface Area

Explanation:

Given

Shape: Cylinder

`h = 15` -- height

`r = 7` --- radius

Solving (a): The curved surface area (CSA)

This is calculated as:

`CSA = 2\pi rh`

This gives:

`CSA = 2 * (22)/(7) * 7 * 15`

`CSA = 2 * 22* 15`

`CSA = 660cm^2`

Solving (b): The total surface area (TSA)

This is calculated as:

`TSA = 2\pi r(h + r)`

This gives:

`TSA = 2 * (22)/(7) * 7 * (15 + 7)`

`TSA = 2 * 22 * (15 + 7)`

`TSA = 2 * 22 * 22`

`TSA = 968cm^2`