Problems Involving Circles

Sometimes when solving a problem involving circles, we want to express the answer in precise, accurate terms and not give it as a rounded decimal. We will then leave the answer in terms of pi. This can be helpful if we expect the pi to cancel out in a further calculation.

In this video, you will see examples of the area and circumference of a circle when given in terms of pi. We will also solve two other problems related to circles.

See also

Pi and the area of a circle — video lesson

Math Mammoth Geometry 3 — a self-teaching worktext with explanations & exercises (grade 7)

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