Find the radius of a sphere with a volume of 121.5π
cubic feet.

4.5ft

Step-by-step explanation:

The volume of a sphere = 4/3πr³

This is question on solid shapes.

Since the volume of the sphere = 121.5πft³ meaning that π was not defined.

Now to get the radius of the sphere, we equate the formula above to the value and now solve for r making it the subject of the formula.

(4/3)πr³ = 121.5π

Now we shall try and make the equation a linear expression by multiplying through by 3 which is the denominator. It now becomes

4πr³ = 121.5π x 3

4πr³ = 364.5π

Now we divide through by π because it is common,

4r³ = 364.5 , again divide by 4,

r³ = 91.125 , now to find the true r, we take the cube root of both side ,( recall, laws of indicies )

r = 3√91.125

 = 4.5ft.

Therefore the radius of the sphere is 4.5ft.

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6

c. 1,233 miles