Tanita J.

Industrial Engineering Intern at Western Digital

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Geometry

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Question:

What is the area of a circle whose diameter is 6 inches?

Tanita J.

Answer:

The area of a circle is the area inside a circle. It is known that the formula for area of a circle is a = pi x r^2. This question gives us the diameter of the circle, which is a line drawn from one edge of the circle to the other edge that passes through the center point. However, the formula requires the radius of the circle. The radius of the circle is the line from the center point of the circle to any edge of the circle. Thus, when drawing it out, it can be seen that the radius is simply half of the diameter. In order to solve this problem we must first solve for the radius, and then plug into the area formula. Since the radius is the diameter divided by two r = 6/2 = 3 Then, you must plug into the forma pi * r ^2 where r = 3 and pi is equation to the known number 3.14 When squaring a number, you are simply multiplying it by itself. Thus, the solution to this problem is: a = 3.14 x 3 x 3 a = 28.26

Basic Math

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Question:

3 + x = 5 Solve for X

Tanita J.

Answer:

Solving for x in this situation means simply isolating x. In other words, we only want x on one side of the equation. To get x on one side of the equation we must simply take away the 3 that is added to the x. However, if we subtract 3 from one side, we must subtract it from the other side to balance the equation. If we don't subtract it from the other side, we are simply making a new problem. When subtracting three from the right side of the equation, you get 5 - 3 = 2. Thus x = 2

Algebra

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Question:

What is (3x2) + 6 x 5

Tanita J.

Answer:

Using PEMDAS We first solve for parenthesis getting (6) + 6 x 5 Then we do multiplication / division getting 6 + 30 Finally, we do addition/subtraction getting our final answer of 36

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