Math 10

posted by .

A cylinder has a surface area of 250cm2. The height is twice as big as the radius. What is the height of the cylinder?

  • Math 10 -

    h = 2r

    SA = 2πr^2 + 2πrh
    = 2πr^2 + 2πr(2r)
    = 6πr^2

    6πr^2 = 250
    r^2 = 125/(3π)
    r = 3.6418..
    h = 2r = 7.28....

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Cylinder Height

    A cylinder has surface area of 402 cm2. The height is three times greater than the radius. What is the height of the cylinder?
  2. Geometry

    The surface area of the sides of a right cylinder can be found by multiplying twice the number pie by the radius times the height. If a circular cylinder has radius (r) and height (h), write an expression that represents the surface …
  3. Math - Please Help

    The surface area of a right circular cylinder is 1200 cm^2 . If the height of the cylinder is twice its diameter, find the dimensionsof the cylinder. I know th formula for SA is SA = 2pir^2 + 2pirh I know h = 2d. I know r = 1/2 d What …
  4. math

    surface area of a rightcircular cylinder. The area of a right circular cylinder is given by the polynomial 2pierh^2 where h is the height and r is the radius of the base. Suppose that a beverage can has a height of 6.2 inches and a …
  5. Math

    A cylinder has a surface area of 250cm2 . The height is twice as big as the radius. What is the height of the cylinder?
  6. Algebra 1

    The radius of a cylinder is 3x-2cm. The height of the cylinder is x+3cm. What is the surface area of the cylinder?
  7. math

    Inside a long empty cylinder with radius R = 25 cm is put a long solid cylinder with radius r = 10 cm such that the bases of the two cylinders are attached. Then water is poured in the remaining empty region of the first cylinder until …
  8. Geo

    What is the altitude of this cylinder: B ==> C?
  9. Math

    Suppose Cylinder A has the same height but twice the radius of Cylinder B. What is the ratio of the volume of Cylinder B to Cylinder A?
  10. Math

    Cylinder A has radius r and height h. Cylinder B has radius 2r and height 2h. How many times greater is the surface area of Cylinder B than the surface area of Cylinder A?

More Similar Questions