Area of a Circle with Radius 13 (Answer: 530.9292)

Exact Answer

A = π × 13² = 530.9292

Area (πr²)

530.9292 (169π)

Circumference (2πr)

81.6814 (26π)

Diameter (2r)

Radius (r)

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Step-by-Step Solution: A = π × 13² = 530.9292

Step 1

Calculate the Area Using A = πr²

Square the radius (13² = 169) and multiply by π (≈ 3.14159265): 169 × π = 530.9292.

A = π × 13² = 169π ≈ 530.9292

Step 2

Calculate the Circumference Using C = 2πr

Multiply 2 × π × 13 = 26π ≈ 81.6814.

C = 2 × π × 13 ≈ 81.6814

Summary & Alternative Representations

Property / Format	Value
Area (πr²)	`530.9292 (169π)`
Circumference (2πr)	`81.6814 (26π)`
Diameter (2r)	`26`
Radius (r)	`13`

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Frequently Asked Questions

What is the circumference of a circle with radius 13?

The circumference is 2 × π × 13 ≈ 81.6814.