Anthony has saved $35 of the $140 he needs to purchase a new bicycle. He plans to save $15 each week w, until he has enough mone
2 answers:
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Here's what I got, hope it helps.
we know that
For a spherical planet of radius r, the volume V and the surface area SA is equal to
The
ratio of these two quantities may be written as
we know
therefore
the answer is