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Masteriza [31]
3 years ago
8

What is the area of a regular octagon with an apothem 16 inches long and a side 19 inches long?

Mathematics
1 answer:
Nitella [24]3 years ago
8 0
Area = (# of sides) * (side length) * (apothem) / 2
area = (8 * 19 * 16) / 2
area = <span> <span> </span></span>1,216 square inches


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d) Solving for d, it is important to note that, a rectangular pyramid has 5 faces and they are: The rectangular base and 4 triangular faces

The formula for the total surface area of the rectangular pyramid is given as

Total Surface Area of the rectangular pyramid = Rectangular Base + Area of Triangular Side A + Area of Triangular Side B + Area of Triangular Side C + Area of Triangular Side D + Area of Triangular Side E

Total Surface Area of the Rectangular Pyramid = 60 inches² + 28 inches² + 28 inches² + 17.75 inches² + 17.75 inches²

Total surface Area of the Rectangular pyramid = 151.5 inches²

The total surface area of the pyramid is 151.5 square inches.

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