| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
A(n) __________ is to a parallelogram as a square is to a rectangle.
triangle |
|
trapezoid |
|
quadrilateral |
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rhombus |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
What is 7a4 + 4a4?
| 28a4 | |
| 11a4 | |
| 3a8 | |
| a48 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
7a4 + 4a4 = 11a4
Which types of triangles will always have at least two sides of equal length?
equilateral and isosceles |
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equilateral, isosceles and right |
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isosceles and right |
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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.
If a = 4, b = 1, c = 2, and d = 4, what is the perimeter of this quadrilateral?
| 11 | |
| 25 | |
| 21 | |
| 19 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 1 + 2 + 4
p = 11
The dimensions of this cylinder are height (h) = 8 and radius (r) = 4. What is the surface area?
| 96π | |
| 4π | |
| 270π | |
| 224π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(42) + 2π(4 x 8)
sa = 2π(16) + 2π(32)
sa = (2 x 16)π + (2 x 32)π
sa = 32π + 64π
sa = 96π