Find the surface area of the cylinder. Round your answer to the nearest tenth.

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

Find the area of the regular hexagon if a side is 20 cm.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.