How big is polaris?

Polaris (Alpha Ursae Minoris), also known as North(ern) Star, Pole Star, and sometimes Lodestar. It is the brightest star in the constellation Ursa Minor. It is very close to the north celestial pole (42′ away as of 2006[update]), making it the currentnorthern pole star.

Even though it looks like a single star, Polaris is actually a multiple star system [See Link], but only Polaris A is visible with the naked eye. It is approximately 30 times larger than our Sun as it is classed as a Supergiant. Giving it a diameter of about 26 million miles. The Sun is only 865,000 miles.