| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
If a = 1, b = 1, c = 1, and d = 8, what is the perimeter of this quadrilateral?
| 13 | |
| 23 | |
| 17 | |
| 11 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 1 + 1 + 1 + 8
p = 11
The dimensions of this cylinder are height (h) = 7 and radius (r) = 1. What is the surface area?
| 198π | |
| 16π | |
| 126π | |
| 88π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(12) + 2π(1 x 7)
sa = 2π(1) + 2π(7)
sa = (2 x 1)π + (2 x 7)π
sa = 2π + 14π
sa = 16π
If angle a = 32° and angle b = 41° what is the length of angle c?
| 96° | |
| 115° | |
| 107° | |
| 126° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 32° - 41° = 107°
Which types of triangles will always have at least two sides of equal length?
isosceles and right |
|
equilateral 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 7a x 9b.
| 63ab | |
| 63\( \frac{b}{a} \) | |
| 16ab | |
| 63a2b2 |
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.
7a x 9b = (7 x 9) (a x b) = 63ab