| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
If side x = 14cm, side y = 7cm, and side z = 10cm what is the perimeter of this triangle?
| 31cm | |
| 32cm | |
| 25cm | |
| 26cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 14cm + 7cm + 10cm = 31cm
Order the following types of angle from least number of degrees to most number of degrees.
right, obtuse, acute |
|
acute, obtuse, right |
|
acute, right, obtuse |
|
right, acute, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
If a = c = 7, b = d = 9, and the blue angle = 80°, what is the area of this parallelogram?
| 63 | |
| 18 | |
| 35 | |
| 8 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 7 x 9
a = 63
The formula for the area of a circle is which of the following?
c = π d2 |
|
c = π r |
|
c = π d |
|
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 b = 6 and x = -8, what is the value of -2b(b - x)?
| 42 | |
| -168 | |
| -64 | |
| -84 |
To solve this equation, 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.)
-2b(b - x)
-2(6)(6 + 8)
-2(6)(14)
(-12)(14)
-168