sat suite question viewer
The circumference of the base of a right circular cylinder is meters, and the height of the cylinder is meters. What is the volume, in cubic meters, of the cylinder?
Explanation
Choice C is correct. The volume, , of a right circular cylinder is given by the formula , where is the radius of the base of the cylinder and is the height of the cylinder. It’s given that a right circular cylinder has a height of meters. Therefore, . It's also given that the right circular cylinder has a base with a circumference of meters. The circumference, , of a circle is given by , where is the radius of the circle. Substituting for in the formula yields . Dividing each side of this equation by yields . Substituting for and for in the formula yields , or . Therefore, the volume, in cubic meters, of the cylinder is .
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B is incorrect. This is the lateral surface area, not the volume, of the cylinder.
Choice D is incorrect. This is the result of using the diameter, not the radius, for the value of in the formula .