Answer:the mean is 90
Step-by-step
you find the sum of the values then divide them by the amount of numbers in the set
XYR=36 hope this helps I actually don't know if it is right so I'm so sry if it is wrong so sry
Answer:

Step-by-step explanation:
a hemisphere is half a sphere.
And if the formula for the volume of a sphere is:

we must calculate the volume of the sphere and in the end divide by two to find the volume of the hemisphere.
Since the radius is:

substituting this into the formula for volume:

this is the volume of the total sphere, thus the volume of a hemisphere is:

rounding to the nearest tenth:

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