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Published byFatima Lester Modified over 2 years ago

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Surface Area of Cones

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ADDITION TO DIAGRAM – NEW VOCAB The slant height of a right cone is the distance from the vertex to any place on the perimeter of the circular base.

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Example 1 Find the surface area of a right cone with radius 9 in and slant height 5 in. Leave your answer in terms of .

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Example 2 Find the surface area of a right cone with a diameter of 6 ft and a slant height of 41 ft. Round your answer to the nearest hundredth.

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Example 3 Find the surface area of the right cone. r 5m 3m

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Example 4 Work backwards to solve for the missing information. Find the slant height of a right cone with a radius of 13 yards and surface area of yd 2.

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Example 5 Work backwards to solve for the missing information. Find the radius of a right cone where the diameter is equal to the slant height and the surface area is 300 cm 2.

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