Useful Formulas

2D Objects Area & Perimeter


Area = 1/2b(h)

Perimeter = a + b + c


Area = L(W)

Perimeter = 2L + 2W

Area = πr^2 (or pi * r squared)

Perimeter (circumference) = πd

π 3.14



3D Objects Volume & Surface Area


Volume = x(y)(z)

SA = 2xy + 2xz + 2yz


Volume = πr^2(h)

SA = 2πr^2 + 2πr(h)


Volume = 1/3(πr^2(h))

SA = πr^2 + πr(l)


Volume = 4/3(πr^2)

SA = 4πr^2


Other Useful Formulas and Information


To measure out a right angle (90 deg) use the 3-4-5 meathod. By measuring one side to three units (any unit of measure just make sure to use the same) and the other side to four units, you will have a right angle when those two points measure 5 units apart.


1 cubic ft = 7.8 gallons


1 gallon of water = 8.35 lbs


It is best to turn over the volume of water your pond holds once every one to two hours.


For waterfalls and streams, your pump should pump at least 100 gallons per hour for every inch wide the waterfall is. For more noise and "white-water" from your falls, increase the flow rate to 200 gallons per hour per inch of waterfall width.


For most sand and gravel material 1 cubic yard equals 1.5 tons.


1 ton of material covers about 100 square feet 2 inches thick.

Phone: 513-771-9121

Fax: 513-771-9170


250 Marion Road
Cincinnati, OH 45215
Map / Directions

Store Hours

  • Mon-Fri 7:30am-5:00pm
  • Sat 8:00am-2:00pm

Note: Yard closes 15 minutes before the office for restocking

Subscribe for Updates

©2019 Bushelman Supply Company. All rights reserved.

Website by Friedrich Advertising