Finding the radius when given the circumference

Finding the radius when given the circumference

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to find the radius of a circle when given the circumference. It begins by introducing the relationship between circumference, diameter, and radius, using the formula C = πD or C = 2πr. The tutorial then demonstrates how to solve for the diameter when the circumference is known, using a given example where the circumference is 24π. Finally, it shows how to calculate the radius from the diameter and verifies the solution, ensuring the understanding of the mathematical process involved.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the relationship between circumference, diameter, and radius?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What constant number is used in the calculations of circumference?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

How can you calculate the diameter if the circumference is known?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the value of the radius if the diameter is found to be 24?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain how to derive the radius from the circumference using the formula.

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