| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.00 |
| Score | 0% | 60% |
If a = c = 5, b = d = 1, what is the area of this rectangle?
| 27 | |
| 5 | |
| 36 | |
| 12 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 5 x 1
a = 5
On this circle, line segment CD is the:
circumference |
|
radius |
|
diameter |
|
chord |
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).
Breaking apart a quadratic expression into a pair of binomials is called:
normalizing |
|
factoring |
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deconstructing |
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squaring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
The dimensions of this trapezoid are a = 6, b = 4, c = 8, d = 2, and h = 4. What is the area?
| 20 | |
| 35 | |
| 12 | |
| 18 |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(4 + 2)(4)
a = ½(6)(4)
a = ½(24) = \( \frac{24}{2} \)
a = 12
The dimensions of this cylinder are height (h) = 1 and radius (r) = 7. What is the surface area?
| 112π | |
| 48π | |
| 28π | |
| 108π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(72) + 2π(7 x 1)
sa = 2π(49) + 2π(7)
sa = (2 x 49)π + (2 x 7)π
sa = 98π + 14π
sa = 112π