| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
What is the circumference of a circle with a diameter of 13?
| 32π | |
| 12π | |
| 13π | |
| 16π |
The formula for circumference is circle diameter x π:
c = πd
c = 13π
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
pairs |
|
exponents |
|
division |
|
addition |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
On this circle, line segment CD is the:
chord |
|
diameter |
|
circumference |
|
radius |
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 trapezoid are a = 6, b = 9, c = 8, d = 3, and h = 4. What is the area?
| 24 | |
| 20 | |
| 32 | |
| 18 |
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(9 + 3)(4)
a = ½(12)(4)
a = ½(48) = \( \frac{48}{2} \)
a = 24
If side x = 5cm, side y = 10cm, and side z = 9cm what is the perimeter of this triangle?
| 24cm | |
| 27cm | |
| 25cm | |
| 39cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 5cm + 10cm + 9cm = 24cm