| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
The dimensions of this cylinder are height (h) = 9 and radius (r) = 8. What is the volume?
| 448π | |
| 63π | |
| 576π | |
| 288π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(82 x 9)
v = 576π
A right angle measures:
90° |
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180° |
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45° |
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360° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
If AD = 28 and BD = 24, AB = ?
| 19 | |
| 20 | |
| 15 | |
| 4 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDFor this diagram, the Pythagorean theorem states that b2 = ?
c - a |
|
c2 - a2 |
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a2 - c2 |
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c2 + a2 |
The Pythagorean theorem defines the relationship between the side lengths of a right triangle. The length of the hypotenuse squared (c2) is equal to the sum of the two perpendicular sides squared (a2 + b2): c2 = a2 + b2 or, solved for c, \(c = \sqrt{a + b}\)
A(n) __________ is two expressions separated by an equal sign.
expression |
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formula |
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problem |
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equation |
An equation is two expressions separated by an equal sign. The key to solving equations is to repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.