| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.27 |
| Score | 0% | 65% |
The dimensions of this cylinder are height (h) = 4 and radius (r) = 2. What is the volume?
| 16π | |
| 4π | |
| 162π | |
| 648π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(22 x 4)
v = 16π
The formula for the area of a circle is which of the following?
c = π d2 |
|
c = π d |
|
c = π r2 |
|
c = 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.
Simplify (3a)(5ab) + (6a2)(3b).
| -3ab2 | |
| 33ab2 | |
| 3ab2 | |
| 33a2b |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
(3a)(5ab) + (6a2)(3b)
(3 x 5)(a x a x b) + (6 x 3)(a2 x b)
(15)(a1+1 x b) + (18)(a2b)
15a2b + 18a2b
33a2b
A right angle measures:
180° |
|
90° |
|
360° |
|
45° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Odd |
|
Last |
|
Inside |
|
First |
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.