Question Details

Detailed explanation and options for the selected question.

If the radius of a circle is 7 cm, what is its circumference?

A. 22 cm
B. 44 cm
C. 21π cm
D. 14π cm

Explanation:

Circumference = 2πr = 2π×7 = 14π cm. Other options are incorrect.

Related Topics

How to Calculate the Diagonal of a Rectangle

Revision Notes

How to Solve Work-Rate Problems

Revision Notes

How to Perform Polynomial Long Division

Revision Notes

Understanding Segment of a Circle and Its Area

Revision Notes

How to Understand Circle Theorems (Angles and Tangents)

Revision Notes

How to Solve Multi-Variable Word Problems (Systems of Equations)

Revision Notes

How to Calculate Permutations (Ordered Arrangements)

Revision Notes

How to Identify and Use Perfect Squares

Revision Notes

How to Use the Pythagorean Identities in Trigonometry

Revision Notes

How to Calculate Perimeter of Polygons

Revision Notes