# Acre

The acre is a unit of land area used in the imperial and US customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly equal to 10 square chains, 1⁄640 of a square mile, 4,840 square yards, or 43,560 square feet, and approximately 4,047 m2, or about 40% of a hectare. Based upon the international yard and pound agreement of 1959, an acre may be declared as exactly 4,046.8564224 square metres. The acre is sometimes abbreviated ac but is usually spelled out as the word "acre". Traditionally, in the Middle Ages, an acre was conceived of as the area of land that could be ploughed by one man using a team of 8 oxen in one day. The acre is still a statutory measure in the United States. Both the international acre and the US survey acre are in use, but they differ by only four parts per million (see below). The most common use of the acre is to measure tracts of land. The acre is commonly used in a number of current and former British Commonwealth countries by custom only. In a few, it continues as a statute measure, although since 2010 not in the UK itself, and not since decades ago in Australia, New Zealand and South Africa. In many of those where it is not a statute measure, it is still lawful to "use for trade" if given as supplementary information and is not used for land registration. (Wikipedia).

Example 1: Application Involving Fraction Division

This video provides an example of dividing a large lot size into smaller lot sizes.

From playlist Fraction Applications

Introduction to Area and Area Formulas

This video defines area and finds the area of various shapes. http://mathispower4u.com

From playlist Perimeter and Area

Conversion: Find the Number of Acres With Dimensions Given in Yards

This video explains how to find the area of rectangle in square feet given dimensions in yards. Then the number of acres is determined.

From playlist Unit Conversions: American or Standard Units

「かぐや」HDTVによる雨の海と虹の入り江

From playlist Earth's place in Solar System - Jaxa

「かぐや」HDTVによるオリエンタレ・ベイスン

From playlist Earth's place in Solar System - Jaxa

「かぐや」HDTVによるアルキメデス

From playlist Earth's place in Solar System - Jaxa

System of equations word problem: infinite solutions | Algebra I | High School Math | Khan Academy

Systems of equations can be used to solve many real-world problems. In this video, we solve a problem about a vegetable framer. In this case, the problem has infinite solutions, which means there's not enough information to find a single solution. Watch the next lesson: https://www.khanac

From playlist Algebra I | High School Math | Khan Academy

How To Create Audio Recognition System Using AcrCloud C# SDK | Session 01 | #C | #programming

Don’t forget to subscribe! In this project series, you will learn to create an audio recognition system using ACRCloud. We will cover the details of interacting with the Acrcloud C# SDK for creating an audio recognition system. This project covers the details necessary to create an audio

Ex: Quadratic Function App: Maximize the Yield of a Harvest (Vertex)

This video explains how to determine the maximum yield under given conditions. The maximum is yield is found by determining the vertex. http://mathispower4u.com

From playlist Applications of Quadratic Equations

Business Math - Linear Programming - General Sol : Optimization (6 of 6) Max. Profit: Growing Crops

Visit http://ilectureonline.com for more math and science lectures! In this video I will show you how to maximizes profit for growing crop A (\$300/acre) and crop B (\$400/acre). First in this series can be seen at: https://youtu.be/zoUUyUQAEFw

Areas Without Formulas -- Part 4 of 4

Part 4 deals with unit conversions for working with length and area measurement units.

From playlist Lessons of Interest on Assorted Topics

Linear Programming

Thanks to all of you who support me on Patreon. You da real mvps! \$1 per month helps!! :) https://www.patreon.com/patrickjmt !! **DOH! There is a STUPID arithmetic mistake by me at the very end!** Sorry! Linear Programming. I do a complete example! For more free math videos, visit http

From playlist All Videos - Part 8

How To Create Audio Recognition System Using AcrCloud C# SDK | Session 04 | #C | #programming

Don’t forget to subscribe! In this project series, you will learn to create an audio recognition system using ACRCloud. We will cover the details of interacting with the Acrcloud C# SDK for creating an audio recognition system. This project covers the details necessary to create an audio

Business Math - The Simplex Method (6 of 15) Standard Maximization Problem - Planting Crops

Visit http://ilectureonline.com for more math and science lectures! In this video I will maximize profit (simplex method) for planting crops. Next video in this series can be seen at: http://youtu.be/pnjb-yhrsmI

From playlist BUSINESS MATH - THE SIMPLEX METHOD

Beatriz Pascual Escudero(5/19/21) Using Algebraic Geometry to detect robustness in Reaction Networks

Title: Using Algebraic Geometry to detect robustness in Reaction Networks Abstract: An interesting property of some biological systems is their capacity to preserve certain features against changes in the environmental conditions. In particular, we are motivated by Reaction Networks and t

From playlist AATRN 2021

Ex: Use Linear Programming to Maximize Profit from Two Crops

This video explains how to set up a linear programming word problem and then maximize the objective function to maximize profit. Site: http://mathispower4u.com

From playlist Linear Programming