| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.84 |
| Score | 0% | 57% |
The dimensions of this cylinder are height (h) = 8 and radius (r) = 3. What is the volume?
| 320π | |
| 72π | |
| 36π | |
| 294π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(32 x 8)
v = 72π
Which types of triangles will always have at least two sides of equal length?
equilateral and right |
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isosceles and right |
|
equilateral and isosceles |
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equilateral, isosceles and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
Solve for a:
4a + 5 = \( \frac{a}{2} \)
| -1\(\frac{3}{7}\) | |
| -\(\frac{1}{2}\) | |
| 2\(\frac{7}{9}\) | |
| \(\frac{16}{25}\) |
To solve this equation, 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.
4a + 5 = \( \frac{a}{2} \)
2 x (4a + 5) = a
(2 x 4a) + (2 x 5) = a
8a + 10 = a
8a + 10 - a = 0
8a - a = -10
7a = -10
a = \( \frac{-10}{7} \)
a = -1\(\frac{3}{7}\)
If the base of this triangle is 2 and the height is 2, what is the area?
| 21 | |
| 71\(\frac{1}{2}\) | |
| 2 | |
| 44 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 2 = \( \frac{4}{2} \) = 2
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
obtuse, acute |
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acute, obtuse |
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supplementary, vertical |
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vertical, supplementary |
Angles around a line add up to 180°. Angles around a point add up to 360°. When two lines intersect, adjacent angles are supplementary (they add up to 180°) and angles across from either other are vertical (they're equal).