Area of a Circle with Radius 2 (Answer: 12.5664)

Exact Answer

A = π × 2² = 12.5664

Area (πr²)

12.5664 (4π)

Circumference (2πr)

12.5664 (4π)

Diameter (2r)

Radius (r)

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Step-by-Step Solution: A = π × 2² = 12.5664

Step 1

Calculate the Area Using A = πr²

Square the radius (2² = 4) and multiply by π (≈ 3.14159265): 4 × π = 12.5664.

A = π × 2² = 4π ≈ 12.5664

Step 2

Calculate the Circumference Using C = 2πr

Multiply 2 × π × 2 = 4π ≈ 12.5664.

C = 2 × π × 2 ≈ 12.5664

Summary & Alternative Representations

Property / Format	Value
Area (πr²)	`12.5664 (4π)`
Circumference (2πr)	`12.5664 (4π)`
Diameter (2r)	`4`
Radius (r)	`2`

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Frequently Asked Questions

What is the circumference of a circle with radius 2?

The circumference is 2 × π × 2 ≈ 12.5664.