Using Pythagorean theorem, we can justify our answer. if c^2 = a^2 + b^2 then triangle is right one, if c^2 > a^2 + b^2 then triangle is obtuse and if c^2 < a^2 + b^2 then triangle is acute triangle.
Here a=8, b=11 and c=16 Put these values in the equation 16^2 = 8 ^2 + 11^2 256 = 64 +121 256> 185 So here c^2 > a^2 + b^2 Which means triangle is obtuse triangle.
This is wanting you to find the average. So add up the services and divide them by the number of services. The answer is Allcante Royal Hotel, which has a mean of 8. The other one has a mean of 7