Question

please help with 1 question i will fan and medal

Answer 1

Diameter equals two times the radius, or radius = half of diameter.
Therefore with diameter = 30", radius = 30/2=15".

So take out your calculator, use
\(\pi\)=3.14, r=15, h=17, and calculate using the given formula
V=\(\frac{1}{3}\pi r^2 h\)
to calculate the volume, and make your choice accordingly.

Answer 2

I got 4003.5 @mathmate

Answer 3

Oh, sorry, my bad.
h does not equal 17.
The slant height is 17.
So you have to solve for h using Pythagoras:
15^2+h^2=17^2.
And the rest should be ok.

Answer 4

I'm confused now @mathmate

Answer 5

Can you solve for from the Pythagoras equation?

Answer 6

I don't really understand this kind of math...

Answer 7

Here, using the right triangle HDN, and apply Pythagoras theorem,
\(15^2+h^2=17^2\)
transpose
\(h^2=17^2-15^2\)
Solve for h:
\(sqrt(h^2)=sqrt(17^2-15^2)\)
\(h=sqrt(289-225)=sqrt(64)=8\)
Now apply the volume formula with h=8 (instead of 17) to calculate volume using your calculator.
Good luck!

Answer 8

d?

Answer 9

Did you work out the volume, and what did you get?

Answer 10

what do i put into the calculator?
15^2+8^2=17^2?

Answer 11

I have already worked out this part for you to get h=8. You need to rework the volume using
\(V=\frac{1}{3}\pi r^2 h\), and r=15, h=8.

Answer 12

1884

Answer 13

Good! you have the correct answer!

Answer 14

thanks

Answer 15

You're welcome!