What is the volume of the pyramid in the diagram?

The correct answer is:

25 cm³.

Explanation:

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

V = 1/3Bh, where B is the area of the base and h is the height of the pyramid.

The base of this pyramid is a square with side length 5; its area is

A = 5(5) = 25 cm².

The height of the pyramid is 3. This gives us:

V = 1/3(25)(3) = 1/3(75) = 25 cm³.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.