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The number of square units in the area of a rectangle...
Elementary algebra, with brief notices of its history - Page 16
by Robert Potts - 1879

## Elementary algebra: with brief notices of its history

Robert Potts - Algebra - 1879 - 668 pages
...parallelogram or rectangle, and A the number of square units in the area, it may be shown that Л = at>* ; that is, the number of square units in the area of...line, the product is a number representing an area. And since A = ab, it follows that — = b, a number denoting b lineal units. Hence. If a number representing...

## Elementary School Mathematics by Grades: Standard measurements. Fifth book

William Estabrook Chancellor - Arithmetic - 1902 - 168 pages
...a number of square feet not by a number of inches in length but by a number of feet in length. When the number of square units in the area of a rectangle is divided by the number of the corresponding linear units in one side, the quotient is the number of...

## A Mental Arithmetic

Israel C. McNeill - Arithmetic - 1902 - 154 pages
...and 4 units wide ? How many square units are there in a rectangle 10 units long and 7 units wide ? 3. The number of square units in the area of a rectangle is equal to the product of the numbers of the like units in the length and width. What is the area of...

## Elementary Algebra

George Albert Wentworth - Algebra - 1906 - 440 pages
...the length of the rectangle, and x — 10 = the number of feet in the width of the rectangle. Since the number of square units in the area of a rectangle is equal to the product of the number of linear units in the length multiplied by the number of linear...

## Walsh-Suzzallo Arithmetics ...: Fundamental processes

John Henry Walsh, Henry Suzzallo - Arithmetic - 1914 - 524 pages
...number of square units will consist of 4 rows of 9 square units each, or 9 rows of 4 square units each. The number of square units in the area of a rectangle is equal to the product of the number of linear units in its length by the corresponding number in its...

## Walsh-Suzzallo Arithmetic: By Grades. Third-[eighth] year

John Henry Walsh, Henry Suzzallo - Arithmetic - 1915 - 176 pages
...number of square units will consist of 4 rows of 9 square units each, or 9 rows of 4 square units each. The number of square units in the area of a rectangle is equal to the product of the number of linear units in its length by the corresponding number in its...

## Plane Geometry

Edith Long, William Charles Brenke - Geometry, Modern - 1916 - 292 pages
...proved. 97. From experiments, as in First Course, page 22, § 16, it can easily be brought out that the number of square units in the area of a rectangle is equal to the number of linear units in the base multiplied by the number of linear units in the altitude....

## Modern Business Arithmetic: Complete Course

Harry Anson Finney, Joseph Clifton Brown - Business mathematics - 1916 - 506 pages
...How many square feet in the area of a rectangle 7 ft. long and 3 ft. wide ? AREAS OF PLANE FIGURES The number of square units in the area of a rectangle is equal to the number of units in the length times the number of units in the width. Find the areas of...