The orbit of earth around the sun is about 5.8 X 10^8, while pluto's orbit is about 2.3. X 10^10 miles. About how many miles longer is pluto's orbit than earth's orbit?
How many times longer = Pluto Orbit / Earth Orbit
= (2.3 10¹⁰) / (5.8 10⁸) Use calculator.
≈ 39.66 longer.