| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.80 |
| Score | 0% | 56% |
The dimensions of this cylinder are height (h) = 4 and radius (r) = 5. What is the volume?
| 81π | |
| 25π | |
| 100π | |
| 16π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(52 x 4)
v = 100π
The endpoints of this line segment are at (-2, 7) and (2, -1). What is the slope of this line?
| -\(\frac{1}{2}\) | |
| -1 | |
| 1 | |
| -2 |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, 7) and (2, -1) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-1.0) - (7.0)}{(2) - (-2)} \) = \( \frac{-8}{4} \)On this circle, a line segment connecting point A to point D is called:
radius |
|
diameter |
|
circumference |
|
chord |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
What is the circumference of a circle with a diameter of 11?
| 8π | |
| 11π | |
| 22π | |
| 30π |
The formula for circumference is circle diameter x π:
c = πd
c = 11π
A cylinder with a radius (r) and a height (h) has a surface area of:
4π r2 |
|
π r2h |
|
π r2h2 |
|
2(π r2) + 2π rh |
A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.