| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.60 |
| Score | 0% | 72% |
The dimensions of this trapezoid are a = 5, b = 4, c = 6, d = 4, and h = 3. What is the area?
| 37\(\frac{1}{2}\) | |
| 13 | |
| 12 | |
| 16\(\frac{1}{2}\) |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(4 + 4)(3)
a = ½(8)(3)
a = ½(24) = \( \frac{24}{2} \)
a = 12
On this circle, line segment AB is the:
circumference |
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diameter |
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chord |
|
radius |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
The dimensions of this cylinder are height (h) = 4 and radius (r) = 2. What is the volume?
| 144π | |
| 4π | |
| 16π | |
| 8π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(22 x 4)
v = 16π
A quadrilateral is a shape with __________ sides.
2 |
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5 |
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3 |
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4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
What is 8a + 7a?
| a2 | |
| 15a | |
| 15 | |
| 56a2 |
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.
8a + 7a = 15a