| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.57 |
| Score | 0% | 71% |
On this circle, line segment AB is the:
circumference |
|
chord |
|
radius |
|
diameter |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
The dimensions of this cylinder are height (h) = 1 and radius (r) = 1. What is the volume?
| 81π | |
| 729π | |
| 1π | |
| 64π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(12 x 1)
v = 1π
If angle a = 53° and angle b = 68° what is the length of angle c?
| 129° | |
| 59° | |
| 70° | |
| 61° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 53° - 68° = 59°
What is 4a2 + 6a2?
| 10a2 | |
| 24a2 | |
| a24 | |
| 10 |
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.
4a2 + 6a2 = 10a2
If a = c = 1, b = d = 2, what is the area of this rectangle?
| 49 | |
| 40 | |
| 7 | |
| 2 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 1 x 2
a = 2