Answer:
how do you find the circumference of a circle??
C=2πr
C=2πr
From the given density function we find the distribution function,

(a)



(b)



(c)



I need you to post a diagram.
However, you are describing a 30 60 90 triangle and here is a good page to learn about those: http://www.1728.org/trig2.htm
Answer:
68/35 hope this helps
Step-by-step explanation: