| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.06 |
| Score | 0% | 61% |
If the base of this triangle is 1 and the height is 4, what is the area?
| 2 | |
| 82\(\frac{1}{2}\) | |
| 90 | |
| 38\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 1 x 4 = \( \frac{4}{2} \) = 2
If a = c = 4, b = d = 2, what is the area of this rectangle?
| 30 | |
| 1 | |
| 54 | |
| 8 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 4 x 2
a = 8
Breaking apart a quadratic expression into a pair of binomials is called:
deconstructing |
|
squaring |
|
normalizing |
|
factoring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
The formula for the area of a circle is which of the following?
c = π d |
|
c = π r |
|
c = π d2 |
|
c = π r2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
If angle a = 61° and angle b = 23° what is the length of angle c?
| 70° | |
| 96° | |
| 133° | |
| 81° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 61° - 23° = 96°