if the volume of a right cylinder =400pi cubic yards, and the height =4yards find the radius?

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2007-07-31 08:59:34 · 4 answers · asked by Amber 1 in Science & Mathematics ➔ Mathematics

π r ² h = 400 π
r ² = 400 / ( h)
r ² = 400 / (4)
r ² = 100
r = 10 yds

2007-08-04 08:48:02 · answer #1 · answered by Como 7 · 0⤊ 0⤋

Volume of a cylinder=Pi.r^2.h
so we have 400 Pi=Pi*r^2.4
or 400/4=r^2
or 100=r^2
or (10)^2=r^2
or r=10 yds ans

2007-07-31 16:27:33 · answer #2 · answered by MAHAANIM07 4 · 0⤊ 0⤋

V = pi*r^2*h
400pi = pi*r^2*4
100 = r^2
r = 10 yards

2007-07-31 16:02:06 · answer #3 · answered by yeeeehaw 5 · 1⤊ 0⤋

V=ÏrÂ²h then 400Ï=ÏrÂ²4
then rÂ²=100, then r = 10yard

2007-08-03 10:16:18 · answer #4 · answered by mramahmedmram 3 · 0⤊ 0⤋