Maths help

Hi

MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder

Can someone show me how we do it by the steps

The cross-section of a cylinder is a circle.
so pi(r)^2=18

solve for r

let the height be h cm

volume of cylinder = pi(r^2)h

72 = pi(r^2)h, but you know r, so you can now find h

1. 👍 0
2. 👎 0
3. 👁 189

Similar Questions

1. maths help

Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The volume of a cylinder is given by volume =

asked by Ali on April 23, 2007
2. Math

A rectangular prism has a length of 100 cm, a height of 10 cm and a width of 5 cm. What is the volume of the rectangular prism? A. 3100 square centimeters B. 1550 square centimeters C. 5000 square centimeters D. 1200 square

3. algebra

a storage bin is shaped like a cylinder with a hemisphere shaped top. the cylinder is 45 inches tall. the volume of the bin is 4131 pi cubic inches. find the radius of the bin. i think [4(pi)r(cubed)]/3=volume of hemisphere and h

asked by ken on November 1, 2010
4. Math

A partial cylinder lies on its side. The bases are a 90 degree sector of a circle. What is the exact volume of the partial cylinder. r=8,length 10 160 pi inch cubed 20 pi inch cubed 80 pi inch cubed 40 pi inch cubed

asked by Callie on January 19, 2012
5. physics.pls help

The volume of a cylinder is defined by the formula V=pie R squared h. If initially have a cylinder with a volume of 10m cubed. Find the volume of the cylinder if the height doubles and if the height is cut in half. pls i really

asked by ted on November 3, 2011
6. Physics

A copper cylinder with a cross-sectional area 0.034 m^2 is placed vertically on a tabletop. What is the weight of the cylinder if it exerts an 800 Pa of pressure on the table top?

asked by Lance on May 2, 2018
7. Math. HELP!

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder.

asked by Thomas on November 17, 2010
8. Math. HELP!

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder.

asked by Thomas on November 17, 2010
9. Math. HELP!

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder.

asked by Thomas on November 17, 2010
10. Math

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder.

asked by Thomas on November 17, 2010

More Similar Questions