| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.95 |
| Score | 0% | 79% |
What is the area of a circle with a radius of 2?
| 9π | |
| 4π | |
| 6π | |
| 3π |
The formula for area is πr2:
a = πr2
a = π(22)
a = 4π
A quadrilateral is a shape with __________ sides.
4 |
|
2 |
|
3 |
|
5 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
The dimensions of this cube are height (h) = 2, length (l) = 6, and width (w) = 6. What is the volume?
| 567 | |
| 48 | |
| 12 | |
| 72 |
The volume of a cube is height x length x width:
v = h x l x w
v = 2 x 6 x 6
v = 72
If AD = 18 and BD = 9, AB = ?
| 10 | |
| 17 | |
| 9 | |
| 15 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDWhat is 8a7 + 9a7?
| -a14 | |
| -1 | |
| 17a14 | |
| 17a7 |
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.
8a7 + 9a7 = 17a7