The answer is 3.93 hours. This is because in one hour there are 60 minutes so you would need to divide your number 236 by 60 and you should end up with 3.9333, which rounded to would just be 3.93 hours in total.
Hope that helps!
Volume= length*width*height = Area * height
<span>square region: A= 32^2= 1024 </span>
<span>circle region: A= pi*radius^2= pi*(diameter/2)^2= 15^2 pi= 225pi </span>
<span>rectangle region: A= 30*45= 1350 </span>
<span>Volume= (1024+ 1350 +225pi) *6 = 14,244 +1350pi </span>
<span>The units are ft^3 </span>
<span>1 yard = 3 feet </span>
<span>yard^3= 27 ft^3 </span>
<span>ft^3= 1/(27y^3) </span>
<span>Cost = price / unit *Volume +surcharge </span>
<span>Cost= 12.50/y^3 *(14,244 +1350pi)ft^3 +25 </span>
<span>= 12.50/27 *(14,244 +1350pi) +25 </span>
<span>~ $8583</span>
I doubt it's 130. It has to be 75 or 50. I'd go with 75.