| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
The dimensions of this trapezoid are a = 6, b = 6, c = 9, d = 2, and h = 5. What is the area?
| 20 | |
| 16 | |
| 14 | |
| 28 |
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(6 + 2)(5)
a = ½(8)(5)
a = ½(40) = \( \frac{40}{2} \)
a = 20
What is the area of a circle with a radius of 2?
| 8π | |
| 16π | |
| 4π | |
| 9π |
The formula for area is πr2:
a = πr2
a = π(22)
a = 4π
The endpoints of this line segment are at (-2, 7) and (2, -1). What is the slope of this line?
| -2 | |
| -1\(\frac{1}{2}\) | |
| \(\frac{1}{2}\) | |
| 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, 7) and (2, -1) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-1.0) - (7.0)}{(2) - (-2)} \) = \( \frac{-8}{4} \)A quadrilateral is a shape with __________ sides.
5 |
|
2 |
|
4 |
|
3 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
If a = c = 9, b = d = 8, and the blue angle = 80°, what is the area of this parallelogram?
| 72 | |
| 15 | |
| 16 | |
| 36 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 9 x 8
a = 72