Answer:
4.R=16
D=16+16=32
C=

C=32π
then do the same thing for other problem
<span>Number of values = 5 (There are 5 values given)
Mean = (82 + 44 + 67 + 52 + 120)/5 = 73
Variance = (1/5) [(82-73)^2 + (44-73)^2 + (67-73)^2 + (52-73)^2 + (120-73)^2] = 721.6
Standard deviation = sqrt (721.6) = 26.86</span>
<em>Sorry, but you need to be more specific!! </em>
<em>Happy Mathing!!</em><em> </em>