| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.85 |
| Score | 0% | 57% |
A cylinder with a radius (r) and a height (h) has a surface area of:
π r2h |
|
2(π r2) + 2π rh |
|
π r2h2 |
|
4π r2 |
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.
If the base of this triangle is 3 and the height is 1, what is the area?
| 77 | |
| 24 | |
| 49\(\frac{1}{2}\) | |
| 1\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 3 x 1 = \( \frac{3}{2} \) = 1\(\frac{1}{2}\)
Solve -6b + b = -7b + 7x + 3 for b in terms of x.
| 4\(\frac{1}{2}\)x - 1\(\frac{1}{2}\) | |
| -5x - 1\(\frac{1}{2}\) | |
| x - 8 | |
| 6x + 3 |
To solve this equation, isolate the variable for which you are solving (b) on one side of the equation and put everything else on the other side.
-6b + x = -7b + 7x + 3
-6b = -7b + 7x + 3 - x
-6b + 7b = 7x + 3 - x
b = 6x + 3
The dimensions of this cylinder are height (h) = 4 and radius (r) = 9. What is the volume?
| 32π | |
| 2π | |
| 648π | |
| 324π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(92 x 4)
v = 324π
If a = c = 9, b = d = 1, what is the area of this rectangle?
| 36 | |
| 8 | |
| 14 | |
| 9 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 9 x 1
a = 9