Find the surface area of a cylinder that has a radius of 9 cm and a height of 15 cm?.

Question

asked Apr 13, 2023 117k views

1 Answer

Keishan · Answer 1 · 2023-04-18T10:31:10+0000

EXPLANATION

Let's see the facts:

Radius = r = 9cm

Height = h = 15cm

The formula of the surface of the cylinder is:

$\text{Surface}_(cylinder)=2\pi r^2+2\cdot\pi\cdot r\cdot h$

Replacing terms:

$\text{Surface}=2\cdot\pi\cdot(9^2)+2\cdot\pi\cdot9\cdot15$

Computing the power:

$\text{Surface}=2\cdot\pi\cdot81+2\cdot\pi\cdot9\cdot15$

Multiplying numbers:

$\text{Surface}=162\cdot\pi+270\cdot\pi$

Simplifying:

$\text{Area}=432\cdot\pi=1357.16cm^2$