Question

Which option best describes an informal argument for why the volume of a cylinder of radius r and height h is V=πr2h
?(1 point)
Responses

A cylinder is a stack of h squares, each with a thickness of one unit and an area of πr2
.
A cylinder is a stack of h squares, each with a thickness of one unit and an area of pi r squared .

A cylinder is a stack of r squares, each with a thickness of one unit and an area of πrh
.
A cylinder is a stack of r squares, each with a thickness of one unit and an area of pi r h .

A cylinder is a stack of r circles, each with a thickness of one unit and an area of πrh
.
A cylinder is a stack of r circles, each with a thickness of one unit and an area of pi r h .

A cylinder is a stack of h circles, each with a thickness of one unit and an area of πr2
.

Answer 1

"A cylinder is a stack of h circles, each with a thickness of one unit and an area of πr^2."

Reason: each unit-thick slice is a disk of area πr^2, and stacking h of them gives volume = πr^2 · h.