an arch is in the form of a semi ellipse it is 50m wide at the base and has height of 20m how wide is the arch at the height of 10m above the base?

Answer 1

an astronaut is to be fired into an ellipitical orbit about the earth having a minimum altitude of 800km and a maximum altitude of 5400km find the equation of the curve followed by the astronaut consider the radius of the eathr to be 6400km

Answer 2

For the ellipse, you can see that
a = 50/2 = 25
b = 20
So, put that into standard form, then find 2x when y=10