Answer: A
Explanation do Pythagorean theorem and find the third side. Then do adjacent/hypotenuse.
824 just add all the sides so 12+12+400+400=824 and in simpler form w2+l2
The mean is not the same thing as median
mean=78+81+85+87=331
mean=331/4=82.75
median is the middle number, but you have a par set of numbers, so your median will be the middle numbers 78,81,85,87 , which are 81+85=166, 166/2=83
83 is your median
We know that
The Euler's formula state that, the number of vertices, minus the number of edges, plus the number of faces, is equal to two
V - E + F = 2
clear F
F=2-V+E
in this problem
V=8
E=14
F=?
so
F=2-8+14
F=8
the answer is8 faces
Answer:
there are alot of things that can be rounded to 4