| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.90 |
| Score | 0% | 78% |
On this circle, line segment AB is the:
chord |
|
circumference |
|
diameter |
|
radius |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
If BD = 10 and AD = 19, AB = ?
| 15 | |
| 17 | |
| 8 | |
| 9 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDWhich of the following is not a part of PEMDAS, the acronym for math order of operations?
pairs |
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division |
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exponents |
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addition |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
If side x = 9cm, side y = 6cm, and side z = 10cm what is the perimeter of this triangle?
| 25cm | |
| 28cm | |
| 30cm | |
| 34cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 9cm + 6cm + 10cm = 25cm
What is the circumference of a circle with a diameter of 10?
| 10π | |
| 38π | |
| 20π | |
| 8π |
The formula for circumference is circle diameter x π:
c = πd
c = 10π