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 Mode of a Data Set

Revision Notes

How to Calculate the Surface Area of a Sphere

Revision Notes

How to Convert Percentages to Decimals and Fractions

Revision Notes

How to Use Summation Formulas for Arithmetic and Geometric Series

Revision Notes

How to Approach Algebraic Word Problems

Revision Notes

How to Use the Factorial Function (n!)

Revision Notes

How to Simplify Complex Fractions

Revision Notes

How to Solve Systems of Three Linear Equations

Revision Notes

How to Solve Radical Equations (Equations with Square Roots)

Revision Notes

How to Interpret and Plot Bar Graphs

Revision Notes