find the height of a right circular cylinder that has a volume of 62.8in cubed and a diameter of 4in

Question

paki · Answer

simple... use formula... h=v/pie * r^2
h= 62.8/3.14*4*4
h=1.25in

accessdenied · Answer

4in  is the diameter, not the radius.

If you recall, the formula for volume of a cylinder:  $ V = \pi r^2 h $
We want to find h.  We know V (given) and r (half the diameter).
   $ 62.8 = \pi \left( \dfrac{4}{2} \right)^2 h $
   $ 62.8 = \pi 2^2 h = 4 \pi h $

paki · Answer

ahh thanks... then first find radius, by the formula... r=d/2.. .then put that in the formula... it will be like, h= 62.8/3.14*2*2
h= 5 inches...

anonymous · Answer

thanks for the help. i have another question. what are the slope and the y-intercept of the line y= -2x + 6?

paki · Answer

@Vickicasa

paki · Answer

and the graph will be like....

paki · Answer

got it dear...