Question

please help due today. Find the volume of a cylinder whose radius is 2.2 cm and has a height of 3 cm. Please show work

Answer 1

General formula is : pi x radius squared x height 

pi x 4.84 x 3 =  45.61592533 

Answer 2

The equation for the volume of a cylinder is $V = \pi r^{2} h$, where v=volume of the cylinder, r=radius, and h=height of the cylinder.

A helpful way for remembering this equation is to think of a cylinder as many circles of the same size stacked on top of each other to a height "h." If you know that the area of a circle is $\pi r^{2}$, then the volume of the cylinder is just the area of the circle times h :)

Back to the problem:
You know that the radius, r = 2.2 cm and the height, h = 3cm. Plug those values into the equation for the volume of a cylinder and solve for V, the volume:
$V = \pi r^{2} h\\ V = \pi (2.2)^{2} (3)\\ V \approx 45.6 \: cm^{3}$

The volume of the cylinder is about 45.6 $cm^{3}$.