Answer: 15
Step-by-step explanation: The formula to calculate the volume of a pyramid is:
V = (1/3) * B * h
where V is the volume, B is the area of the base, h is the height.
In this case, we know that the base is a square with sides of 7 inches, so the area of the base is:
B = 7 * 7 = 49 square inches
We also know that the volume is 245 cubic inches, so we can substitute these values into the formula and solve for h:
245 = (1/3) * 49 * h
Multiplying both sides by 3:
735 = 49 * h
Dividing both sides by 49:
h = 15
Therefore, the height of the pyramid is 15 inches.