| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
The dimensions of this cylinder are height (h) = 2 and radius (r) = 6. What is the volume?
| 2π | |
| 72π | |
| 16π | |
| 405π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(62 x 2)
v = 72π
Which types of triangles will always have at least two sides of equal length?
equilateral and right |
|
isosceles and right |
|
equilateral and isosceles |
|
equilateral, isosceles and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
Simplify (y - 6)(y + 5)
| y2 + y - 30 | |
| y2 - 11y + 30 | |
| y2 - y - 30 | |
| y2 + 11y + 30 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y - 6)(y + 5)
(y x y) + (y x 5) + (-6 x y) + (-6 x 5)
y2 + 5y - 6y - 30
y2 - y - 30
The formula for the area of a circle is which of the following?
a = π d |
|
a = π d2 |
|
a = π r2 |
|
a = π r |
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.
The dimensions of this trapezoid are a = 6, b = 6, c = 9, d = 9, and h = 5. What is the area?
| 37\(\frac{1}{2}\) | |
| 20 | |
| 30 | |
| 28 |
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(6 + 9)(5)
a = ½(15)(5)
a = ½(75) = \( \frac{75}{2} \)
a = 37\(\frac{1}{2}\)