Answer:
$3.75
Step-by-step explanation:
468.75/125=$3.75 per car wash
Answer:
20+16= 36
Step-by-step explanation:
Formula for the area of a quarter circle: A = (pi x r^2) / 4
3.14 = (3.14 x r^2) / 4
3.14r^2 = 12.56
r^2 = 4
r = 2 meters
Hope this helps! :)
369
Step-by-step explanation:
Arc length=(π*diameter)*(angle/360°)
88π=π*diameter*80°/360°
diameter=369
A nickel has a diameter of 21.21 mm and a thickness of 1.95 mm
<span>2.121 cm diameter </span>
<span>0.195 cm thickness </span>
<span>Think of a nickel as a cylinder </span>
<span>r = 2.121/2 = 1.0605 cm </span>
<span>V = pi * r^2 * h </span>
<span>V = pi * 1.0605^2 * 0.195 cubic cm </span>
<span>2 liters = 2000 cubic cm </span>
<span>2000 / (1.0605^2 * 0.195 * pi) => </span>
<span>2902.84713216 </span>
<span>Your upper limit is 2902, but it could be as little as 0 (for instance if the 2L bottle was only 1 cm wide, then you wouldn't be able to fit a single nickel in there) </span>
<span>I'd say that you could expect about a 70% packing efficiency, just off the top of my head </span>
<span>2900 * 0.7 => </span>
<span>290 * 7 => </span>
<span>300 * 7 - 10 * 7 => </span>
<span>2100 - 70 => </span>
<span>2030 </span>
<span>I'd expect around 2000 nickels would fill up the bottle quite nicely, supposing you can get the nickels into it.</span>
