Find the standard form of the equation of the parabola with a focus at (7, 0) and a directrix at x = -7. a. y = 1/28 x^2
b. x = 1/28y^2
c. -28y = x^2
d. y^2 = 14x

The two cylinders are similar. if the ratio of their surface areas is 9/1.44 find the volume of each cylinder. round your answer to the nearest hundredth. a. small cylinder: 152.00 m3 large cylinder: 950.02 m3 b. small cylinder: 972.14 m3 large cylinder: 12,924.24 m3 c. small cylinder: 851.22 m3 large cylinder: 13,300.25 m3 d. small cylinder: 682.95 m3 large cylinder: 13,539.68 m3