Question

Problem solved!

Answer 1

Plug the numbers into the formula for the volume of a cylinder.
V = (pi)(r^2)h

Answer 2

Yes, assuming radius r = 4" and height h = 10" since the problem does not explicitly state which number is the radius and which number is the height.

Answer 3

make sure the problem says the radius is 4" and not the diameter.
pi is just a constant, a number that you plug in when you do the computation. If the answer choices is a decimal number then you will put pi = 3.14 and use your calculator to compute the volume. If the answer choices leave pi as pi then you will also leave it as pi and just do the r^2 * h part in your calculator and leave pi as pi.

Answer 4

Well, in Cambridge examinations, the instructions tell you to consider pi an 3.142 or use the symbol pi on the calculator.

Answer 5

Then the 4" is probably the diameter in which case you have to divide by 2 to get the radius. Can you include the diagram?

Answer 6

ok.

Answer 7

Then the 4" is the radius.

Answer 8

That is the radius.
r = 4" ; h = 10"
V = (pi)r^2h = (3.1416)(4^2)(10) = 502.65 square inches.

Answer 9

Is it clear now or do you have any questions?

Answer 10

you are welcome.