| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.41 |
| Score | 0% | 68% |
What is the circumference of a circle with a diameter of 7?
| 7π | |
| 8π | |
| 30π | |
| 22π |
The formula for circumference is circle diameter x π:
c = πd
c = 7π
The dimensions of this cylinder are height (h) = 6 and radius (r) = 3. What is the surface area?
| 112π | |
| 54π | |
| 196π | |
| 12π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(32) + 2π(3 x 6)
sa = 2π(9) + 2π(18)
sa = (2 x 9)π + (2 x 18)π
sa = 18π + 36π
sa = 54π
If a = c = 5, b = d = 7, what is the area of this rectangle?
| 12 | |
| 16 | |
| 35 | |
| 6 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 5 x 7
a = 35
The dimensions of this trapezoid are a = 6, b = 9, c = 8, d = 9, and h = 5. What is the area?
| 10 | |
| 24 | |
| 12\(\frac{1}{2}\) | |
| 45 |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(9 + 9)(5)
a = ½(18)(5)
a = ½(90) = \( \frac{90}{2} \)
a = 45
A coordinate grid is composed of which of the following?
y-axis |
|
all of these |
|
x-axis |
|
origin |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.