math
posted by sidlord on .
the base of a cylindrical juice container is a circle with diameter 20 cm. The height of the container is 80cm. What is the capacity of the juice container? show your work.
b) The juice container will be filled to 90% of its capacity. What will be the volume of juice in the container?
plz help and thx!

the base of a cylindrical juice container is a circle with diameter 20 cm. The height of the container is 80cm. What is the capacity of the juice container?
Pi * r^2 * h = V
3.14 * 10^2 * 80 = ??
For the second part, take 90% of the above answer. 
for 10^2, would you just make it 100?
so 3.14 x 100 x 80 = 25129cm^3 
My calculator shows 25,120 cm^3

oops, my mistake.thanks for correcting me!:)

this next question gives me the diameter instead of the radius. what do i do when that happens.
height : 10.3m
diameter : 5.8m 
Since the diameter is twice the radius, divide the diameter by 2 to get the radius.

alright, thank u! i just have anpther quick question.
The juice company decides to use a box to contain the jice. What is the minimum height of the box if its base measure 10cm by 12cm? how would i do this one? 
3xt2