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How do you figure linear footage?

Calculating linear footage doesn't take into account the width of the object. For example, if lumber is sold by linear foot, then two pieces of lumber both 10 feet long are the same price even though one piece might be 1 foot wide and the other piece is 2 feet wide.\nSometimes a measurement of linear feet is applicable for a purchase, such as floor molding or trim that has per linear foot pricing. To calculate the amount needed, the homeowner measures the length of each wall. Or if the homeowner knows the room is 10 feet wide and 15 feet long, he would just add the two walls of 10 feet an..

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Why is pi important?

The Greek letter "pi" is used in math and science to stand for the ratio between the circumference of a circle and its diameter. The ratio equals about 3.1415. This value is a constant for any circle. The circumference of a circle is always equal to pi times the diameter. The area of a circle is always equal to pi times the radius squared. These formulas are used constantly by engineers, physicists, designers and mathematicians.\nThe uses of pi extend beyond merely finding circumferences or radii. NASA uses pi to calculate the trajectories of spacecraft, to determine the sizes of craters and t..

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What are some ways to measure a radius?

If you are given the diameter of a circle, you can calculate the radius by dividing the diameter by two, as the diameter is equal to the radius times two. If you are only given the area of a circle, the formula to calculate the radius is to multiply the area by ? (pi) and find the square root of that number.

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What is the way to add whole numbers and fractions?

In cases where there are mixed numbers, both sides still must be represented as fractions for successful addition. In the case of adding 3 4/5 + 6 2/5, the denominator will be multiplied by the whole number, and the numerator will be added. Therefore, 3 4/5 would become 5 x 3 + 4, with the denominator staying the same, for a fraction of 19/5. The same must be done for the second mixed number, so 5 x 6 + 2 for 32/5. Added together, this gives a fraction of 51/5. Now, 5 must be divided into 51 for an answer of 10, and 1/5 remains. The final answer to this addition problem is 10 1/5.In cases wher..

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What is an application of trigonometry?

Using trigonometry, it is possible to measure objects, no matter how large or inaccessible they are. Knowing the distance and angle between the observer and an object, the height of a tall object such as a cliff can be ascertained. The height is treated as one side of a triangle, while the distance between the observer and the top of the cliff is treated as another side of the same triangle. The problem of finding the height of a tall object is turned into a simple trigonometric calculation. The same method can be applied to objects lying along the plane of the Earth, such as a distant lake. T..

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What are some fact families for multiplication and division?

Multiplication and division fact families typically start with pairs of numbers between zero and 12, such as five and 10. These numbers and their product form a number family. Five times 10 is 50, so this number family consists of the related numbers: five, 10 and 50. Some number families include just two numbers each, such as seven and 49.\nFour related math facts make up a fact family: the multiplication fact that created the third member of the number family, its related multiplication fact, the division fact related to the two and its related division fact. For instance, "5x10=50," "10x5=5..

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How do you make an equilateral triangle inscribed in a circle?

Find the diameter of the circlePlace the 90-degree corner of the drafting triangle, or any corner of the sheet of paper, at any point on the perimeter of the circle. Orient the triangle or the sheet of paper so that it crosses the perimeter at two other points. Mark those two points and draw a line connecting them using a straight edge. This line is a diameter of the circle.Find a second diameterChoose a different point on the perimeter and find a second diameter using the same method as in Step 1. The point where these two diameters cross is the center of the circle. Find the radius of the ci..

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What are the Roman numerals for one through five?

In the Roman numeral system, I represents 1, V 5, X 10, L 50, C 100, D 500 and M 1000.\nIf a Roman numeral repeats, then the numeric value of that symbol is multiplied by the number of times it is indicated. Therefore, II represents 2 because I (1), is indicated twice. III represents 3 because I is indicated three times. However, no symbols except M can be used more than three times in the formation of a number. Therefore, 4 is not written as IIII. \nFour, which is written as IV, illustrates another Roman counting rule. If a symbol precedes a different symbol with a larger value, then subtract..

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How do prices of the 2000s compare to those of past decades?

Chevrolet, the largest and most competitive automaker to Ford in 1924, charged an average of $525 for a new car that year. In 1949, the trendy Hudson saw prices starting at $2,381, while the 1969 Pontiac Firebird Trans Am retailed for $4,366. A 1977 Dodge Aspen sold for an average of $4,515, and a Chevrolet Corvette cost $23,392 in 1984. The average price of a new car in 2014 was $31,252.\nIn 1930, the typical cost of gasoline was 10 cents per gallon, only rising 1 cent per gallon over the following 10 years. In 1960, the price per gallon rose to 25 cents, changing to $1.19 in 1980, $1.34 in 1..

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What are opposite rays?

The opposite arms of a straight, 180-degree angle are an example of opposite rays.\nA ray is a set of infinite points. It has length but no width. It stretches indefinitely in one direction only. Two opposite rays stretch indefinitely in both directions. All points on these two rays are collinear points.\nA ray is a subset of a line. It always lies in a plane. Two opposite rays are subsets of the line that they form.

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