Answer:
250 cm^3.
Explanation:
The volume = 1/3 * area of base * height
The base is square and the diagonal is 10cm, so by Pythagoras the lebgth of the side (s) can be calculated as follows:
10^2 = s^2 + s^2
s^2 = 100/2
s^2 = 50
x = √50
So the area of the base = (√50)^2 = 50 cm^2
Volume = 1/3 * 15 * 50
= 25 cm^3.