Total Surface Area = 2Ï€r2 + 2Ï€rh = 2Ï€r(r + h) = 2Ï€*2(2 + 8) = 40Ï€ cm2 = 125.664 cm2 approx.
A cylinder whose radius is 2cm and height is 8cm has a total surface area of approximately 125.66cm2 {ADDED} To explain that further, the formula is pi*r^2 X h where r is the radius and h the height.
The lateral area of a cylinder with a diameter of 10cm and height of 2cm is approximately 62.83cm2
62.8 (pi times radius squared times height (3.14* 2 squared=12.56 then 12.56 times 5= 62.8)
The area is 12.57 cm2
The volume of the cylinder is: 15.7 cm3
A cylinder with a radius of 4cm and a height of 2cm has a volume of 100.53cm3
A cylinder whose radius is 2cm and height is 8cm has a total surface area of approximately 125.66cm2 {ADDED} To explain that further, the formula is pi*r^2 X h where r is the radius and h the height.
The lateral area of a cylinder with a diameter of 10cm and height of 2cm is approximately 62.83cm2
20 pie cm^3
Volume = pi*22*5 cubic cm
62.8 (pi times radius squared times height (3.14* 2 squared=12.56 then 12.56 times 5= 62.8)
32.56
The formula for the volume of a cylinder is Pi x r^2 x height. So this cylinder's volume is Pi (2cm)^2 x 5cm = 62.83 cubic cm
I would say that the liquid rises by 1.77cm... This can be obtained as follows given that cylinder of radius(r)=2cm, height(h)=4cm is submerged in another cylinder, determining the volume of the cylinder being submerged =16*pi. When this cylinder is placed in another cylinder the liquid will rise by an amount which equals the volume of the cylinder being inserted.(By Archimedes principle). Using this 16*pi, determine the height using radius= 3cm , we get h=1.77cm
The area is 12.57 cm2
The volume of the cylinder is: 15.7 cm3
no