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Surface Area of Pyramids and Cones

Surface Area of Pyramids and Cones. 12.3. Surface Area of a Pyramid. S = Area of the Base * 6 *Area of each triangle S = B * 6(1/2(b*l)) S = B*(1/2)(6b)(l) where 6b equal the perimeter S = B * (1/2)Pl. Find the surface area of the regular hexagonal pyramid. 1. 1.

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EXAMPLE 3

Standardized Test Practice. EXAMPLE 3. SOLUTION. To find the slant height l of the right cone, use the Pythagorean Theorem. l 2 = h 2 + r 2. Write formula. l 2 = 8 2 + 6 2. Substitute. l = 10. Find positive square root. ANSWER. The correct answer is B.

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EXAMPLE 3

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Surface Area of Pyramids and Cones

EXAMPLE 3

EXAMPLE 3