A cylinder with a radius of 21 inches and a height of 98 inches has a volume of 135,773.35 cubic inches. This cylinder would have a volume of 587.763 US gallons.
A cone, when radius is 4 and height is 21, has a volume of 351.86 units3
Volume = pi*r2*h = 21375 cubic ft (approx)
21
Total surface area = 628.3 square units.
A cylinder with a radius of 21 inches and a height of 98 inches has a volume of 135,773.35 cubic inches. This cylinder would have a volume of 587.763 US gallons.
A cone, when radius is 4 and height is 21, has a volume of 351.86 units3
Volume = pi*r2*h = 21375 cubic ft (approx)
Volume = pi*182*21 = 21,375.396 cubic feet to 3 decimal places
21
3298.67 units2
The volume of this cylinder is approximately 3.41 cubic feet.
21
Total surface area = 628.3 square units.
The volume of a sphere with a radius of 21 units is: 12,348 units 3
Surface area of a cylinder without the end caps = 2*pi*10.5*21 square cm.
so a volume of a cylinder is V=3.14r2 X h.. you should be able to do it from there ;)