There are these ways to make 6:
We can then sort this list into 3 dfferent, 2 different, and no different.
Lets start easy.
3 same gets us only one way to permutate the numbers. 1
2 same gives us 2! ways to permutate the numbers(But we don't have any 2s) 0
and three different gives us 3! ways to permute 6
We have 7 ways to make 6 out of non zero positive whole numbers.
The volume is about 3.5^2 *3.14(pi*r^2) because the diameter is 7cm so the volume is 3ish^2*3ish so the answer is 9^3 = 27
You would need to know the area of a circle if you wanted to put a rocket into space, you would need to know how much fuel is in the tank
the radius is 2.3, so the answer is 2.3^2*pi = 5.29pi
5.29pi/2 = 2.645pi