To solve this we are going to use the free distance fallen formula:
where
is the distance
is the gravity of Earth
is the time in seconds
We know from our problem that the
penny fell off the top of the building and hit the sidewalk below 3.1 seconds later, so
. Lets replace the value in our formula:
meters
We can conclude that the penny fell a distance of 47.098 meters
The quotient of 2 non-zero integers is seldom another integer.
In fact, the quotient is another integer ONLY when the divisor
is a factor of the dividend.
Answer:
The ratio of their volumes is: 
Step-by-step explanation:
If the cones are similar, then the ratio of their heights should equal the ratio of their radiuses. If we call R the radius of the larger cone (the one of height 9 cm) and r the radius of the smaller cone (the one of height 4 cm), then the following proportion should be verified:
where we have solved for "R" in terms of "r".
Now we input this information in the formula for the volume (V) of the largest cone, and for the volume (v) of the smaller cone, recalling that the volume of a cone is the product of the area of the cone's circular base (
).
So now the ratio of their volumes (V/v) can be obtained:
