The population is growing unchecked
------------------------------------------------------
Formula
------------------------------------------------------
Circumference = πD
------------------------------------------------------
Find Diameter
------------------------------------------------------
3600π = πD
D = 3600 ← Divide by π on both sides
------------------------------------------------------
Answer: Diameter = 3600 unit
------------------------------------------------------
We must assume that all workmen work at the same rate, and keep it up forever.
More men ==> fewer days
so the proportion is: 30/25 = x/10
Cross-multiply the proportion:
300 = 25 x
Divide each side by 25 :
x = 300/25 = <u>12 men</u>
12/99 is the fraction form
Find x you mean?
substract both side by 2x
5x=-35
divide both side by 5
x=-7
->D
