What is the equation to find the volume of a cylinder?

30 determine the coefficient on x 12 y 24 x12y24 in ( x 3 + 2 x y 2 + y + 3 ) 18 . (x3+2xy2+y+3)18. (be careful, as x x and y y now appear in multiple terms! )

If there are 3.281 feet in 1 meter, how many inches are in one centimeter

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top