11 Answered Questions for the topic Cones

06/19/21

Consider a right circular cone whose base is a disk of radius 10cm. In its development figure, the central angle of the sector is 240. Find the height of the right circular cone.
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03/18/21

What were the dimensions of the original cone?
The bases of a frustum of a cone have radii 1 1/3 and 2.The height of the frustum is 2.What were the dimensions of the original cone?radius=?height=?
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08/14/18

A cone and a cylinder have equal radii, r, and equal altitudes, h. If the slant height of the cone is l, then the ratio of the lateral area of the cone to the l
A cone and a cylinder have equal radii, r, and equal altitudes, h. If the slant height of the cone is l, then the ratio of the lateral area of the cone to the lateral area of the cylinder is A. l:h... more
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07/11/18

A sector with central angle θ is cut from a circle of radius R = 24 inches, and the edges of the sector are brought together to form a cone.
A sector with central angle θ is cut from a circle of radius R = 24 inches (see figure), and the edges of the sector are brought together to form a cone. Find the magnitude of θ such that the... more
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Cones

02/19/18

About the volume
A cone has a volume of 562.5pi cm^3. The radius of the base of the cone is equal to twice the height of the cone. Work out the curved surface area of the cone. Give answer to 3 sig figs.
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Cones

04/11/17

How much will 10 cone shaped cupcakes weigh?
Austin uses a mold to make cone shaped cupcakes. The diameter of the mold is 3 inches, and the height of the mold is 2 inches. If one cubic inch is about .55 ounce, how many ounces will 10 cupcakes... more
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11/04/16

What's the approximate mass ofbthe paperweight?
A solid cone-shaped lead crystal paperweight has a height of 5 centimeters and a base diameter that's 20% larger than the height. If the density of lead crystal us 3.1 g/cm^3, what's the... more
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12/28/15

What happens when a cone is immersed in a cylinder?
A cylindrical container of base radius 8 cm is filled with water to a depth of 10 cm. (The height of the container is more than 10 cm). A solid right circular cone of base radius 6 cm and height h... more
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02/21/15

linear approximation and derivative help
A right circular cone of height h and base radius r has total surface area S consisting of its base area plus its side area, leading to the formula: S= pi*r^2+pi*r*sqrt(r^2+h^2)Suppose you start... more
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06/09/13

A cylinder of radius 6 cm and height 18 cm is full of water. What must be the height of a cone with radius 9cm to hold the same amount of water?
dont know how to do
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03/10/13

Imagine a plane and a cone intersecting to form a parabola. Explain why the plane has to intersect the axis of the cone.
This a math homework problem and i don't understand it.
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