| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.67 |
| Score | 0% | 53% |
The formula for the area of a circle is which of the following?
a = π d |
|
a = π d2 |
|
a = π r2 |
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a = π r |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
A(n) __________ is to a parallelogram as a square is to a rectangle.
triangle |
|
rhombus |
|
quadrilateral |
|
trapezoid |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
lw x wh + lh |
|
h2 x l2 x w2 |
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h x l x w |
|
2lw x 2wh + 2lh |
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.
Solve for b:
-4b - 2 < \( \frac{b}{6} \)
| b < -\(\frac{20}{29}\) | |
| b < -\(\frac{12}{25}\) | |
| b < \(\frac{4}{7}\) | |
| b < -4 |
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.
-4b - 2 < \( \frac{b}{6} \)
6 x (-4b - 2) < b
(6 x -4b) + (6 x -2) < b
-24b - 12 < b
-24b - 12 - b < 0
-24b - b < 12
-25b < 12
b < \( \frac{12}{-25} \)
b < -\(\frac{12}{25}\)
The formula for the area of a circle is which of the following?
c = π r |
|
c = π d |
|
c = π r2 |
|
c = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.