| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.85 |
| Score | 0% | 57% |
If a = c = 6, b = d = 5, and the blue angle = 73°, what is the area of this parallelogram?
| 30 | |
| 56 | |
| 72 | |
| 3 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 6 x 5
a = 30
The formula for the area of a circle is which of the following?
c = π d2 |
|
c = π d |
|
c = π r |
|
c = π r2 |
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.
If a = c = 8, b = d = 9, what is the area of this rectangle?
| 14 | |
| 54 | |
| 30 | |
| 72 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 8 x 9
a = 72
Which types of triangles will always have at least two sides of equal length?
equilateral, isosceles and right |
|
equilateral and isosceles |
|
isosceles and right |
|
equilateral 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)(3ab) + (2a2)(3b).
| -15a2b | |
| 27ab2 | |
| 27a2b | |
| 15ab2 |
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)(3ab) + (2a2)(3b)
(7 x 3)(a x a x b) + (2 x 3)(a2 x b)
(21)(a1+1 x b) + (6)(a2b)
21a2b + 6a2b
27a2b