Round .498 to the nearest hundredth

(! ) three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2