A cylindrical vase has a diameter of 6 inches. At the bottom of the vase, there are 8 marbles, each of diameter 3 inches. The vase is filled with water up to a height of 10 inches.

Which of the following could be used to calculate the volume of water in the vase?
π(10in)2(3in) − 1.5(four over threeπ(8in)3)
π(3in)2(10in) − 1.5(four over threeπ(8in)3)
π(10in)2(3in) − 8(four over threeπ(1.5in)3)
π(3in)2(10in) − 8(four over threeπ(1.5in)3)
these are the answer choices

Question

A cylindrical vase has a diameter of 6 inches. At the bottom of the vase, there are 8 marbles, each of diameter 3 inches. The vase is filled with water up to a height of 10 inches.

Which of the following could be used to calculate the volume of water in the vase? 
π(10in)2(3in) − 1.5(four over threeπ(8in)3)
 π(3in)2(10in) − 1.5(four over threeπ(8in)3)
 π(10in)2(3in) − 8(four over threeπ(1.5in)3)
 π(3in)2(10in) − 8(four over threeπ(1.5in)3)
these are the answer choices

vocaloid · Answer

hint:

write an expression to calculate the volume occupied inside the vase

shesolitt · Answer

i thought it would be A... am i wrong?

vocaloid · Answer

not quite

vocaloid · Answer

volume of the vase = (pi)(h)(r^2) = ?

shesolitt · Answer

so then the answer would be C? im sorry im really bad at geo

vocaloid · Answer

nope, please answer my question

vocaloid · Answer

(pi)(h)(r^2) = ?

shesolitt · Answer

but it says the height of the water in the vase is 10...

vocaloid · Answer

look carefully at the formula, where does the exponent 2 go?

shesolitt · Answer

by the radius

vocaloid · Answer

right, so what is the expression for volume?

shesolitt · Answer

im just going to go with D.