Weegy: The formula for the volume of a square pyramid is: 1/3bh^2. So: 1/3(14)(18^2) V = 1512 feet cubed User: Find the lateral area of a triangular prism with base edges of 5cm, 12cm, and 13 cm. The height of the prism is 14cm. Weegy: The lateral area is the perimeter of the base times the height, (5 + 12 + 13)(14). I'll let you do the arithmetic.
BTW this is just the sum of the areas of 3 rectangles that form the sides of the prism: (5)(14) + (12)(14) + (13)(14). (More)

An easy way to find the sum of the measures of the interior angles of a regular heptagon is to use the formula for finding the sum of interior angles of a regular polygon.
Si= sum on interior angles
n= number of sides
Si = 180(n - 2)
Since a heptagon has 7 sides, we just plug in 7 for "n"
Si = 180(7 - 2)
Si = 180(5)
Si = 900
The lateral area of a triangular prism with base edges of 5cm, 12cm, and 13 cm and a base height of 14cm is:
(5 * 14) + (12 * 14) + (13 * 14) = 420

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Added 157 days ago|11/19/2016 1:52:03 PM

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