2 years ago

The equation for the area of a circle is given.

Mathematics

1 answer:

Helga [31]2 years ago

5 0

$A=\pi r^2; r=3 =>\\\\A=\pi \times3^2\\A=9\pi$

Answer: $9\pi$

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The formula to find the period of orbit of a satellite around a planet is (T^2) = (4pi^2/ gm) r3 where r is the orbit’s mean rad

Inga [223]

See the attached graphic to see this solved for "r".
You should be very careful about stating the units for each of those variables.
time in seconds
radius in meters
mass in kilograms
G = 6.674 x 10^-11 m^3 / (kilograms * seconds²)
Also, it would be worth your while to go to this web page http://www.1728.org/kepler3a.htm
It has a calculator and other information about Kepler's Third Law.