| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
2lw x 2wh + 2lh |
|
h x l x w |
|
lw x wh + lh |
|
h2 x l2 x w2 |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
|
equal angle |
|
equal length |
|
parallel |
A trapezoid is a quadrilateral with one set of parallel sides.
If a = 4, b = 2, c = 6, and d = 5, what is the perimeter of this quadrilateral?
| 19 | |
| 22 | |
| 18 | |
| 17 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 2 + 6 + 5
p = 17
Solve for y:
3y + 1 < 5 + 9y
| y < -2 | |
| y < -\(\frac{5}{8}\) | |
| y < -1 | |
| y < -\(\frac{2}{3}\) |
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 < sign and the answer on the other.
3y + 1 < 5 + 9y
3y < 5 + 9y - 1
3y - 9y < 5 - 1
-6y < 4
y < \( \frac{4}{-6} \)
y < -\(\frac{2}{3}\)
The dimensions of this trapezoid are a = 5, b = 5, c = 8, d = 6, and h = 3. What is the area?
| 12 | |
| 16\(\frac{1}{2}\) | |
| 22\(\frac{1}{2}\) | |
| 27\(\frac{1}{2}\) |
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(5 + 6)(3)
a = ½(11)(3)
a = ½(33) = \( \frac{33}{2} \)
a = 16\(\frac{1}{2}\)