| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
The dimensions of this trapezoid are a = 6, b = 6, c = 7, d = 8, and h = 4. What is the area?
| 28 | |
| 7\(\frac{1}{2}\) | |
| 16 | |
| 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(6 + 8)(4)
a = ½(14)(4)
a = ½(56) = \( \frac{56}{2} \)
a = 28
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
|
parallel |
|
equal length |
|
equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.
If a = c = 3, b = d = 2, and the blue angle = 80°, what is the area of this parallelogram?
| 8 | |
| 20 | |
| 9 | |
| 6 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 3 x 2
a = 6
Order the following types of angle from least number of degrees to most number of degrees.
right, obtuse, acute |
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acute, right, obtuse |
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acute, obtuse, right |
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right, acute, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
The dimensions of this cylinder are height (h) = 6 and radius (r) = 4. What is the surface area?
| 234π | |
| 80π | |
| 8π | |
| 168π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(42) + 2π(4 x 6)
sa = 2π(16) + 2π(24)
sa = (2 x 16)π + (2 x 24)π
sa = 32π + 48π
sa = 80π