| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.06 |
| Score | 0% | 61% |
The dimensions of this cylinder are height (h) = 6 and radius (r) = 4. What is the volume?
| 96π | |
| 320π | |
| 144π | |
| 200π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(42 x 6)
v = 96π
The formula for the area of a circle is which of the following?
c = π d |
|
c = π r |
|
c = π r2 |
|
c = π d2 |
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.
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
exponents |
|
division |
|
addition |
|
pairs |
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.)
If a = c = 7, b = d = 4, and the blue angle = 58°, what is the area of this parallelogram?
| 63 | |
| 28 | |
| 10 | |
| 12 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 7 x 4
a = 28
Simplify (8a)(2ab) + (2a2)(6b).
| 80a2b | |
| 80ab2 | |
| 28ab2 | |
| 28a2b |
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.
(8a)(2ab) + (2a2)(6b)
(8 x 2)(a x a x b) + (2 x 6)(a2 x b)
(16)(a1+1 x b) + (12)(a2b)
16a2b + 12a2b
28a2b