Calculate the radius of a black hole that has the same mass as the Sun.
Gravitational constant: 6.67 × 10⁻¹¹ m³ kg⁻¹ s⁻²
Speed of light: 3.0 × 10⁸ m/s
Mass of Sun: 2.0 × 10³⁰ kg
Your answer should be in meters with three significant figures.