Answer:
n=3
Step-by-step explanation:
20+20+20 length +width+ height
20×3
It will be b because you will have to time $3.50P140= 490
Step-by-step explanation:

Answer:
We call the denominator rational.
Step-by-step explanation:
For example:

It's clear that the denominator is now a rational number, not an irrational one anymore.
The volume of a sphere is 4/3 * pi * r³ so substitute the values in
4/3 * pi * 2³
4/3 * pi * 8
32/3 * pi
The volume is either 32/3pi units³ or 33.49 units³ (they're the same value)
I hope this helps!