Use the formula for the surface area of a right cone:

Where 'r' is the radius and 's' is the slant height, plug in what we know(use 3.14 to approximate for pi):

Multiply and simplify exponent:

Multiply:

Add, round to the nearest whole number:
Answer:
t = 6 hours
Step-by-step explanation:
First, we need to plug in our known information into d = rt.
450mi =
* t
450mi = 75mi * t --- simplify fraction
t = 
t = 6 hours
Answer:
(3,0)
Step-by-step explanation:
Answer:
quadrillion, hope this helps
Step-by-step explanation:
Answer:
the answer is 6
Step-by-step explanation:
you take the absolute value for both of them which is 2 and 8 but you keep the negative still so it would be -2+8 which is 6