Nature's Cover - Everything But Plants - The Largest Selection of Landscaping Products in Centre County

Calculation Guide

General Equivalents

27.55 (5 gal buckets) = 1 cubic yard

27 cubic feet = 1 cubic yard

128 cubic ft = 1 cord wood

43,560 sq ft per acre

640 acres = 1 sq. mile

9 sq ft = 1 sq yd

linear feet = length (no width)

2,000 pounds = 1 ton

Circle

Circumference
diameter × 3.1416
or
radius × 2 × 3.1416

Area
diameter × 0.7854
or
radius × radius × 3.1416

Triangle

Circumference
add length of all sides

Area
½ base × height
or
base × height divide by 2


Rectangle

Area
length × width

Square

Area
length × width

Sphere

Surface Area
radius × radius × 3.1416 × 4


Trapezoid

Area
add 2 parallel sides × height divide by 2