The answer is 410
I hope it helps.
Use Pythagoras’ theorem:
a^2+b^2=c^2
But we rearrange this formula to make it
c^2-a^2=b^2
So 25^2-15^2=b^2
625-225= b^2 = 400
You now need to find the square root of 400 to find the square root of b
sqrt of 400 is 20
So 20 is the missing length in this triangle
<span>We know that the surface of a sphere is: S = 4 * pi * r^2
The surface of Earth is : Se = 4 * 3.1416 * (7900/2)^2 = 196,066,797.51
And the Jupiter is : Sj = 4 * 3.1416 * (88800/2)^2 = 24,772,840,374.32
So the surface of Jupiter is around 11^2 times bigger than the Earth</span>
