General: Mathematics 🔊 Flashcards by Shelly Morelli | Brainscape

Q

What is the formula for area of a rectangle?

A

A= LengthxWidth

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Q

What is π?

A

Pi 3.1416 or the ratio of the circumference to the diameter of any circle

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Q

What is the formula for the circumference to the diameter of any circle?

A

C= πD

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Q

What is the formula for the area of a circle?

A

A= πR²

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Q

What is the formula for the volume of a cylinder?

A

V= πR²xH (area times height)

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Q

What is the formula used for finding the volume of a rectangle?

A

V= LxWxH

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Q

What is the root of a number?

A

The base number that when multiplied by itself one or more times will produce the given number

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Q

Give an example of perfect squared numbers.

A

4, 9, 16, 64, 100, 144, etc

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Q

What is a squared number?

A

A number that is multiplied by itself

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Q

How do you express a decimal as a percent?

A

Move the decimal two places and add the percent sign

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Q

Using the powers of ten, how is 1,000,000 expressed?

A

Ten to the sixth power

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Q

What is scientific notation?

A

Representing very large or small numbers using powers of 10

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Q

What is the sum of a large negative number and a small positive number?

A

Subtract the smaller number from the larger number and use the sign of the larger number in the answer

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Q

How is a ratio expressed?

A

As a fraction or with a colon between two numbers

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Q

What is a proportion?

A

A ratio that describes the relation between two objects or different dimensions

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Q

How do you divide one fraction by another?

A

Cross multiply

Q

What are right, obtuse, and acute angles?

A

A right angle is 90°, an obtuse angle is greater than 90°, and an acute angle is less than 90°

Q

What is a quadrant?

A

A quarter of a circle

Q

What is a polygon?

A

Closed shape with three or more sides

Q

What is a parallelogram?

A

A four-sided object with two pairs of parallel sides (rhombus)

Q

What is the hypotenuse of a triangle?

A

The long side opposite the right angle

Q

What is a mixed number?

A

A whole number followed by a fraction

Q

How can a decimal number be changed into a fraction?

A

Multiply the decimal value by the desired denominator; the result will be the numerator of the fraction

Q

Name some types of triangles.

A

Isosceles, equilateral, scalene, obtuse, acute, and right

Q

What is an equilateral triangle?

A

All three sides are the same length