To answer this you have to use Pythagoras's theorem: a^2 + b^2 = c^2
Put in the values:
5^2 + 15^2 = c^2
Simplify it:
25 + 225 = c^2
Simplify again:
250 = c^2
Square root both sides:
15.8113883008 = c
So the ramp is:
15.8113883008 feet
Now round the number:
15.8ft
The above is the answer :)
(btw sorry in advance if you've spotted a mistake)
Answer: 
Step-by-step explanation:
Given
Function is 



from (i) and (ii) we get

Answer:
8
Step-by-step explanation:
Substitute the equation and values into the average rate of change formula.
Answer:
A right circular cone
Step-by-step explanation: