A sand castle can be modeled with four 6-inch-tall square prisms, one on top of the other, as shown in the figure below.
6 inches
The base of the bottom prism has a side length of 30 inches, and the base of each of the other
three prisms has a side length 7 inches less than the side length of the base of the prism below
it. What is the volume of the sand castle?

2,808 square inches
5,196 square inches
7,422 square inches
10,596 square inches

could u provide us some answer choices or hmm idk maybe a table for us to anser with ? ?

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d