Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Does anyone know what the surface area of the exoplanet Kepler 452b is? And how do you figure that out?
4 Answers
- SpacemanLv 74 years ago
r = radius of Earth = 6,371 km
R = radius of Kepler 452b = 1.1r = 7,008 km
A = surface area = to be determined
A = 4πR²
A = 617,178,011 km²
Source(s): http://www.mathopenref.com/spherearea.html https://en.wikipedia.org/wiki/Kepler-452b https://en.wikipedia.org/wiki/Earth_radius - poornakumar bLv 74 years ago
If ' r ' is the radius of that exoplanet (it can be found) its
area = 4πr²..
[you can find it in any middle-school level Mathematics textbook ]
- 4 years ago
They'll tell you it's a 'superEarth' or whatever. Say it's 4 times the diameter of our Earth - then, you know it's 4 x 7917 miles = 31,668 miles in diameter... So, the radius is half that - 15,832 miles, and surface area is A = 4 x pi x r^2... just plug it in.
