Please help ASAP this is a some homework I need help with

I believe that the answer is 1.4 because if you do all of the math out you get 1,390,000 km which then you put into scientific notation which is 1.4x10 raised to the 4

Step-by-step explanation:

oops i put it up there. Hope that this was helpful.

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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explanation:

step-by-step explanation: