| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.54 |
| Score | 0% | 71% |
If a = c = 3, b = d = 4, and the blue angle = 65°, what is the area of this parallelogram?
| 12 | |
| 40 | |
| 25 | |
| 48 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 3 x 4
a = 12
Order the following types of angle from least number of degrees to most number of degrees.
right, obtuse, acute |
|
acute, right, obtuse |
|
acute, obtuse, right |
|
right, acute, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
If the base of this triangle is 3 and the height is 1, what is the area?
| 65 | |
| 1\(\frac{1}{2}\) | |
| 32\(\frac{1}{2}\) | |
| 20 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 3 x 1 = \( \frac{3}{2} \) = 1\(\frac{1}{2}\)
What is 3a - 8a?
| 11 | |
| -5a | |
| -5a2 | |
| a2 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
3a - 8a = -5a
The formula for the area of a circle is which of the following?
a = π d |
|
a = π d2 |
|
a = π r |
|
a = 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.