A planet's radius is approximately 3,380 mi. About two-thirds of the planet's surface is covered by water.

3.how is solving radical equations different than solving linear equations?

step-by-step explanation:

do your own work and don"t cheat.

step-by-step explanation:

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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