| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
If a = c = 9, b = d = 10, and the blue angle = 79°, what is the area of this parallelogram?
| 90 | |
| 21 | |
| 72 | |
| 16 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 9 x 10
a = 90
What is the area of a circle with a diameter of 6?
| 5π | |
| 9π | |
| 16π | |
| 4π |
The formula for area is πr2. Radius is circle \( \frac{diameter}{2} \):
r = \( \frac{d}{2} \)
r = \( \frac{6}{2} \)
r = 3
a = πr2
a = π(32)
a = 9π
A(n) __________ is to a parallelogram as a square is to a rectangle.
triangle |
|
quadrilateral |
|
rhombus |
|
trapezoid |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
If the base of this triangle is 6 and the height is 8, what is the area?
| 60\(\frac{1}{2}\) | |
| 25 | |
| 105 | |
| 24 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 6 x 8 = \( \frac{48}{2} \) = 24
Simplify 8a x 7b.
| 56\( \frac{b}{a} \) | |
| 15ab | |
| 56\( \frac{a}{b} \) | |
| 56ab |
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 7b = (8 x 7) (a x b) = 56ab