Spaceman
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
poornakumar b
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 ]
Robert
God's little acre? Lol. Just kidding.
quantumclaustrophobe
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.