D is integer and rest r rational I guess
Volume is 4/3(3.14)(r)^2
the radius is 5.2 ft
You need a picture to lable and draw it so we can awnser your question
12 + 0.35X = 20.05
12 + 0.35X - 12 = 20.05 - 12
0.35X = 8.05
0.35X/0.35 = 8.05/0.35
X = 23
Hope this helps!!
