A pyramid is built such that three of its faces are congruent, isosceles right triangles whose legs are 10 inches long. The fourth face is an equilateral triangle. What is the volume of the pyramid?

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Answer:

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To find the volume of the pyramid, we have to calculate the base area and multiply it by the height of the pyramid.

The volume of the pyramid is calculated as 167in^3

Volume of a Pyramid

The formula of volume of a pyramid is given as

[tex]v = \frac{1}{3} \pi r^2 h[/tex]

This can be further expressed as

[tex]volume = \frac{1}{3} * base area * height[/tex]

Data;

  • side length = 10

The length of the triangle is 10in and we can proceed to find the base area of the pyramid.

[tex]area = \frac{1}{2} * 10 * 10 = 50in^2[/tex]

The height of the pyramid is the same as the sides of the triangle as they are at right angle with the base.

volume of pyramid will be calculated as

[tex]v = \frac{1}{3} (50)(10) = 166.67 = 167in^3[/tex]

The volume of the pyramid is calculated as 167 cubic inches.

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