| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
If a = c = 8, b = d = 7, and the blue angle = 55°, what is the area of this parallelogram?
| 16 | |
| 56 | |
| 81 | |
| 30 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 8 x 7
a = 56
The dimensions of this cube are height (h) = 8, length (l) = 8, and width (w) = 2. What is the volume?
| 288 | |
| 18 | |
| 128 | |
| 40 |
The volume of a cube is height x length x width:
v = h x l x w
v = 8 x 8 x 2
v = 128
Which of the following statements about a triangle is not true?
perimeter = sum of side lengths |
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sum of interior angles = 180° |
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exterior angle = sum of two adjacent interior angles |
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area = ½bh |
A triangle is a three-sided polygon. It has three interior angles that add up to 180° (a + b + c = 180°). An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite (d = b + c). The perimeter of a triangle is equal to the sum of the lengths of its three sides, the height of a triangle is equal to the length from the base to the opposite vertex (angle) and the area equals one-half triangle base x height: a = ½ base x height.
Breaking apart a quadratic expression into a pair of binomials is called:
normalizing |
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factoring |
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squaring |
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deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
The dimensions of this cylinder are height (h) = 4 and radius (r) = 7. What is the surface area?
| 154π | |
| 10π | |
| 234π | |
| 224π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(72) + 2π(7 x 4)
sa = 2π(49) + 2π(28)
sa = (2 x 49)π + (2 x 28)π
sa = 98π + 56π
sa = 154π