| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.46 |
| Score | 0% | 69% |
Which of the following is not true about both rectangles and squares?
all interior angles are right angles |
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the perimeter is the sum of the lengths of all four sides |
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the area is length x width |
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the lengths of all sides are equal |
A rectangle is a parallelogram containing four right angles. Opposite sides (a = c, b = d) are equal and the perimeter is the sum of the lengths of all sides (a + b + c + d) or, comonly, 2 x length x width. The area of a rectangle is length x width. A square is a rectangle with four equal length sides. The perimeter of a square is 4 x length of one side (4s) and the area is the length of one side squared (s2).
The dimensions of this trapezoid are a = 5, b = 2, c = 7, d = 8, and h = 3. What is the area?
| 15 | |
| 30 | |
| 13\(\frac{1}{2}\) | |
| 37\(\frac{1}{2}\) |
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(2 + 8)(3)
a = ½(10)(3)
a = ½(30) = \( \frac{30}{2} \)
a = 15
The dimensions of this cylinder are height (h) = 5 and radius (r) = 6. What is the volume?
| 81π | |
| 180π | |
| 75π | |
| 63π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(62 x 5)
v = 180π
A coordinate grid is composed of which of the following?
y-axis |
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origin |
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all of these |
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x-axis |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
If BD = 23 and AD = 28, AB = ?
| 8 | |
| 18 | |
| 5 | |
| 12 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD