| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.03 |
| Score | 0% | 61% |
The dimensions of this cylinder are height (h) = 5 and radius (r) = 4. What is the surface area?
| 40π | |
| 270π | |
| 240π | |
| 72π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(42) + 2π(4 x 5)
sa = 2π(16) + 2π(20)
sa = (2 x 16)π + (2 x 20)π
sa = 32π + 40π
sa = 72π
The endpoints of this line segment are at (-2, -3) and (2, -5). What is the slope of this line?
| -1\(\frac{1}{2}\) | |
| -\(\frac{1}{2}\) | |
| 2\(\frac{1}{2}\) | |
| -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, -3) and (2, -5) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-5.0) - (-3.0)}{(2) - (-2)} \) = \( \frac{-2}{4} \)A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
|
equal length |
|
right angle |
|
equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.
If the base of this triangle is 2 and the height is 3, what is the area?
| 49\(\frac{1}{2}\) | |
| 35 | |
| 3 | |
| 31\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 3 = \( \frac{6}{2} \) = 3
The dimensions of this cube are height (h) = 8, length (l) = 6, and width (w) = 7. What is the volume?
| 336 | |
| 6 | |
| 12 | |
| 16 |
The volume of a cube is height x length x width:
v = h x l x w
v = 8 x 6 x 7
v = 336