| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
The dimensions of this cylinder are height (h) = 6 and radius (r) = 3. What is the volume?
| 54π | |
| 28π | |
| 648π | |
| 9π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(32 x 6)
v = 54π
Simplify 5a x 4b.
| 20\( \frac{b}{a} \) | |
| 20ab | |
| 20a2b2 | |
| 20\( \frac{a}{b} \) |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
5a x 4b = (5 x 4) (a x b) = 20ab
What is 3a2 - 2a2?
| 1a2 | |
| 5a4 | |
| 6a2 | |
| 1 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
3a2 - 2a2 = 1a2
If the length of AB equals the length of BD, point B __________ this line segment.
bisects |
|
intersects |
|
midpoints |
|
trisects |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
What is the area of a circle with a radius of 5?
| 4π | |
| 8π | |
| 25π | |
| 2π |
The formula for area is πr2:
a = πr2
a = π(52)
a = 25π