To calculate the area of a structure or section of land mass in square miles, use the formula for area of the section's shape with the dimensions, such as length, width, and radius, in miles. Not all sections of land or buildings have a simple shape, in which case the section should be divided up into simple shapes as well as possible to get an exact answer or a good estimate.
The area of a simple square plot of land can be calculated by measuring one side in miles and squaring that number. Simple formulas for area for triangles, circles, rectangles, parallelograms and other shapes can also be used when appropriate to calculate area.
Learn MoreA factor rainbow is a way of writing factors for numbers using a series of arcs. It helps students ensure they have all the factors by listing them in consecutive order.
Full Answer >To round a decimal, identify the place value you want to round, which is referred to as the rounding digit. Identify the number immediately to the right of the rounding digit. If the number immediately to the right of the rounding digit is less than five, don't change the rounding digit, and drop all digits to the right. If the number to the right of the rounding digit is greater than five, add one to the rounding digit, and remove all digits to the right.
Full Answer >When 0 is used as a placeholder, it allows people to write numbers in shorthand and tell them apart. For example, the number 509 is shorthand for "5 times 100, plus 0 times 10 plus 9 times 1." Since zero adds no value to the 10's place, it can be used as a placeholder there, creating the possibility of the shorter notation.
Full Answer >The equivalent of 77 centimeters is slightly over 30.3 inches, or a little more than 2 1/2 feet. One inch is equal to 2.54 centimeters. Converting 77 centimeters to inches requires dividing the number of centimeters by 2.54 centimeters per inch.
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