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3 years ago

15

A square pyramid has a base with a side length of 7.5 feet and lateral faces with heights of 16 feet. Write an expression that c

an be used to find the surface area, in square feet, of the square pyramid.
Please provide an expression, not just the surface area please :)

1 answer:

dybincka [34]3 years ago

3 0

Check the picture below.

so the surface area of the pyramid will be the sum of the areas of the base and the four triangular faces.

$\stackrel{\textit{\Large Areas}}{\stackrel{\textit{4 triangular faces}}{4\left[ \cfrac{1}{2}(7.5)(16) \right]}~~ + ~~\stackrel{\textit{rectangular base}}{(7.5)(7.5)}}\implies 240~~ + ~~56.25\implies 296.25~ft^2$

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