 | Ernst Rudolph Breslich - Mathematics - 1916 - 392 pages
...equal to their difference. Summary 603. The following theorems have been proved in the chapter. 1. The area of a rectangle is equal to the product of the base and the altitude. 2. The area of a parallelogram is equal to the product of the base and the altitude.... | |
 | Mathematics - 1917 - 284 pages
...mentally: 20. (a) (b) (c) (d) (e) (f) (g) 83 36 69 21 . 57 73 86 By means of the theorem which states that the area of a rectangle is equal to the product of the base by the altitude. we may prove by a geometrical construction the truth of the above rule (141),... | |
 | Ernst Rudolph Breslich - Logarithms - 1917 - 408 pages
...concurrent. [422] Areas 493. Parallelograms having equal bases and equal altitudes are equal. [459] 494. The area of a rectangle is equal to the product of the base and the altitude, R=bh [481] 495. The area of a parallelogram is equal to the product of the base... | |
 | George Wentworth, David Eugene Smith, Joseph Clifton Brown - Mathematics - 1917 - 264 pages
...there are 4 rows of squares. Since there are 4x10 squares, we have: Area = 4 x 10 sq. ft. = 40 sq. ft. The area of a rectangle is equal to the product of the base and height. This means that 10 x 4 = 40, the number of square feet. We often express this statement... | |
 | Charles Ernest Chadsey, James Hamblin Smith - Arithmetic - 1917 - 326 pages
...the number of the same kind of units in the width. We can state this more briefly in the: PRINCIPLE: The area of a rectangle is equal to the product of the base and altitude. 4. Let A stand for the area, b for the base and a for the altitude. The above principle... | |
 | John Wesley Young, Frank Millett Morgan - Functions - 1917 - 586 pages
...blocks to prove that (a • 6) • c = o • (6 • c), when a, 6, c are positive integers. 4. Assuming that the area of a rectangle is equal to the product of its base by its altitude, show that ab = ba, when a, b are any positive real numbers. 5. By considering... | |
 | George Wentworth, David Eugene Smith, Joseph Clifton Brown - Mathematics - 1918 - 300 pages
...results will probably be correct only to two (not four) decimal places. For brevity it is usually stated that the area of a rectangle is equal to the. product of the base and height. The rectangle of the lines AB and BC is usually indicated by AB • BC and the square... | |
 | George Wentworth, David Eugene Smith - Arithmetic - 1919 - 268 pages
...convenient to use a kind of shorthand known as algebraic notation. Thus, if we wish to state briefly that the area of a rectangle is equal to the product of the base and height, always meaning in such cases the product of the abstract numbers representing the... | |
 | George Wentworth - 1919 - 266 pages
...convenient to use a kind of shorthand known as algebraic notation. Thus, if we wish to state briefly that the area of a rectangle is equal to the product of the base and height, always meaning in such cases the product of the abstract numbers representing the... | |
 | Eugene Henry Barker - Mathematics - 1920 - 264 pages
...the lengths of the sides. In the latter form, the rule is called a, formula. The rule which states that the area of a rectangle is equal to the product of the base and altitude can be expressed more briefly in a formula as follows : A= a • b where A represents... | |
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Recall that the area of a rectangle is equal to the product of the measure of its length and the measure of its width. 
