Respuesta :
The base of the parallelogram is πr.
What is a circle?
A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the center. Equivalently, it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant.
According to the given problem,
Circumference of the circle = 2πr
The parallelogram has a circle at its base and it is equivalent to half of the circumference of the circle.
⇒ Base of the parallelogram = [tex]\frac{2\pi r}{2}[/tex]
= πr
Hence, we can conclude, the base of the parallelogram is πr.
Learn more about circles here: https://brainly.com/question/11833983
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