Step-by-step explanation:
Radius is half of the diameter
Circumference is 2*pi*radius
Area is pi*radius^2
So r (radius)= 10.3
C (circumference)=64.72
and A (area)=333.29
feel free to ask more questions :)
Answer:

Step-by-step explanation:

+18



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
Move all terms not containing U to the right side of the equation.
Exact Form:
U = 1/2
Decimal Form:
U = 0.5
Rational numbers because not a whole numbe,r counting number or integer