Bob bought a solid rubber doorstop to keep the air flowing between the rooms of his apartment. A triangular prism. The triangular sides have a base of 2 centimeters and height of 1.5 centimeters. The prism has a height of 5 centimeters. What is the minimum amount of rubber used to make the doorstop? 5 centimeters cubed 7.5 centimeters cubed 32 centimeters cubed 33 centimeters cubed