the average age of four men is 40. If the sum of the ages of three of them is 115, what's the age of the fourth man?
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The formula to find the volume of a sphere is: V= 
Since the diameter is 18 cm, so the radius is equal to r=18/2 = 9
Now we replace r by it's value, so we get:
And we get approximately
Hope this Helps :D
Since the diameter is 18 cm, so the radius is equal to r=18/2 = 9
Now we replace r by it's value, so we get:
And we get approximately
Hope this Helps :D