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
Answer:
50%
Step-by-step explanation:
50% of anything is half that being said half of 8 would be 4. SHEEEEEESH
Answer:
i dont know but my Friends do
Answer:
The value of c is 36
Step-by-step explanation:
Now, we fine the perfect square polynomial, we need to have the expression of the form:

so this can be written as a perfect square as: 
Now the expression given to us is:

so when c is 36, we will get:

Now, this can be re-written as:

so here we can see that it is of the form:

so the perfect square is:

Hence, when c = 36 we get a perfect square.
Well the area is 13.2²π which = about 547.11 km² if that's what you're asking