Find the volume of a pyramid with a square base, where the side length of the base is 18.5 in and the height of the pyramid is 10.9. Round your answer to the nearest tenth of a cubic inch.

someone help me

18.6 is right

To find the volume of a pyramid, you can use the formula:

Volume = (1/3) * base area * height

In this case, the base of the pyramid is a square with side length 18.5 inches, so the base area can be found by squaring the side length:

Base area = (18.5 in)^2

Next, we substitute the values into the formula:

Volume = (1/3) * (18.5 in)^2 * 10.9 in

Now, we can calculate:

Base area = (18.5 in) * (18.5 in) = 342.25 in^2

Volume = (1/3) * 342.25 in^2 * 10.9 in

Multiply the base area by the height and then divide by 3:

Volume = 3980.325 in^3

Finally, round the answer to the nearest tenth of a cubic inch:

Volume ≈ 3980.3 in^3

Therefore, the volume of the pyramid is approximately 3980.3 cubic inches.

54.2

Rounded.

All pointy things have volume V = 1/3 Bh

So, this pyramid has volume
v = 1/3 * 18.5^2 * 10.9 = 1243.5 in^3