Mars has an approximate diameter of 6.794 x 103 kilometers. Assume that Mars is a perfect sphere. Use the formula for the volume of a sphere, V = 4/3 πr3 to determine the volume of Mars. Show your work and give the answer in scientific notation.

Question

helder_edwin · Answer

d=2r

anonymous · Answer

solve for r and then plug r into the formula for the volume of a sphere.

ash2326 · Answer

@kenneyfamily did you understand?

anonymous · Answer

no sorry..still confused

ash2326 · Answer

@Romero would you please help here?

anonymous · Answer

well we know that the diameter can also be rewritten as 

d=r2

where r=radius and d=diameter


and we know that the only unknown in the formula is r

anonymous · Answer

Now let's solve for r 

2r=d
r=d/2

anonymous · Answer

so all we have to do is divide the diameter by 2

 (6.794 x 103 kilometers)/2=r

anonymous · Answer

$$\frac{4}{3} πr^3$$

where r=(6.794 x 103)/2

anonymous · Answer

just plug that in into a calculator and you get the answer for volume

ash2326 · Answer

@Romero good explanation :)

anonymous · Answer

THANKS!!