The radius of a circle is 2 kilometers. What is the area?

Question

Mathematics

Macy Klein

1 May, 18:32

The radius of a circle is 2 kilometers. What is the area?

+2

Answers (2)

Know the Answer?

Hadley · Answer 1

Answer:12.57km

Step-by-step explanation:

A=π·r^2=π·2^2≈12.56637

or just radius squared multiplied by pi

Ahmed Jefferson · Answer 2

A = 4 pi km ^2

or approximately

A = 12.56 km^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

The radius is 2

A = pi * 2^2

A = 4 pi km ^2

If we approximate pi as 3.14

A = 4 * 3.14

A = 12.56 km^2