| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.76 |
| Score | 0% | 75% |
If a = c = 3, b = d = 8, what is the area of this rectangle?
| 24 | |
| 81 | |
| 8 | |
| 9 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 3 x 8
a = 24
Simplify 8a x 5b.
| 40\( \frac{b}{a} \) | |
| 40\( \frac{a}{b} \) | |
| 13ab | |
| 40ab |
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 x 5b = (8 x 5) (a x b) = 40ab
A quadrilateral is a shape with __________ sides.
4 |
|
2 |
|
5 |
|
3 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
The dimensions of this cylinder are height (h) = 2 and radius (r) = 6. What is the surface area?
| 96π | |
| 16π | |
| 100π | |
| 154π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(62) + 2π(6 x 2)
sa = 2π(36) + 2π(12)
sa = (2 x 36)π + (2 x 12)π
sa = 72π + 24π
sa = 96π
What is the circumference of a circle with a diameter of 2?
| 32π | |
| 8π | |
| 2π | |
| 38π |
The formula for circumference is circle diameter x π:
c = πd
c = 2π