# MATHS MONGU COLLEGE

posted by .

A cylinder whose volume is 386,000m3 has it's length 1.3 times its diameter. calculate the diameter of the cylinder given that the volume V = 3.142r2h.

• MATHS MONGU COLLEGE -

v = πr^2 h
Just plug in the known values
386000 = π r^2 (1.3*2r) = 2.6π r^3
r^3 = 386000 / 2.6π
r = 36.15, so
d = 72.30

## Similar Questions

1. ### mat 116/algebra

A cylinder has a radius of 5 in. If the volume of the cylinder is 250ƒà in.3, what is the height of the cylinder?
2. ### math

A cylinder has a diameter of 80 cm and a length of 45 cm. Another cylinder has the same volume but is 80cm long. What is the diameter of the longer cylinder?
3. ### College Chemistry

If the density of cylinder 1 is 3.55 , what is the density of cylinder 2?
4. ### Physics

The cubit is an ancient unit of length based on the distance between the elbow and the tip of the middle finger of the measurer. Assume that the distance ranged from 43 to 53 cm, and suppose that ancient drawings indicate that a cylindrical …
5. ### math

if a cylinder with a height equal to its diameter has a volume of 20 cubic inches. How can you fine the volume of a sphere whose radius is equal to that of a cylinder
6. ### geometry

The diameter and height of this cylinder are equal to the side length, S, of the cube in which the cylinder is inscribed. What is the expression for the cylinder's volume?
7. ### maths

A hollow cylinder open at both ends is made of steel 2 cm thick. What will be the volume of steel used in making the cylinder, if the external diameter is 24 cm and the length of the cylinder is 55 cm.
8. ### Maths

Cylinder A is eight time as tall as cylinder B, but the diameter of cylinder B is four times the diameter of the cylinder A. Which cylinder has larger volume?
9. ### Geometry

A cone has diameter 12 and height 9. A cylinder is placed inside the cone so the base of the cylinder is concentric with the base of the cone and the upper base of the cylinder is contained in the surface of the cone. If the volume …
10. ### Geometry

A cone has diameter 12 and height 9. A cylinder is placed inside the cone so the base of the cylinder is concentric with the base of the cone and the upper base of the cylinder is contained in the surface of the cone. If the volume …

More Similar Questions