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Find the surface area of a cone if the diameter of its base is 13.5 feet and it has a slant height of 16.8 feet?
Wiki User
∙ 9y ago
The formula to find the surface area of a cone is SA =(pi);r^2 + (pi)rl. In the problem, the diameter of the base is given as 13.5 ft. That would make the radius 13.5 / 2 or 6.75 ft. The slant height, or l, is 16.8 ft. The formula would become SA = (3.14)(6.75^2) + (3.14)(6.75)(16.8). The solution would then be 499.14 ft^2.
Wiki User
∙ 9y ago
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Why do you need to FIND the slant height if you have the [lateral height and] slant height?
How do you find slant height?
the slant height is always 2 units bigger then the height
How do you find the lateral area and the surface area when you have the slant height and the radius and the base edge?
3
How do you find the slant height of a cone if you have surface lateral and radius?
Uisng the lateral area and tha radius, you should be able to find the height of the cone. Using the height and radius as the legs of a right triangle, use the Pythagorean Theorem. The hypotenuse is the slant height.
What is the formula to find the area of a cone?
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When you make a cone, you fold the cone along its slant height and thus you get the cone which is curved. So when you need to find the curved surface area (Which excludes the base) you need to use the same slant height that you folded the paper along which gave you the cone. Check out the links attached. It has some illustrations which will help.
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first you multiply each side by 1,000,000 then you find the surface area of a cylinder that has a diameter of 3in and the height of 6in
