Find the volume for number 1 , 2 and 3

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?