| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.17 |
| Score | 0% | 63% |
The formula for the area of a circle is which of the following?
c = π d2 |
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c = π d |
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c = π r2 |
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c = π r |
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.
What is the circumference of a circle with a diameter of 17?
| 20π | |
| 32π | |
| 17π | |
| 1π |
The formula for circumference is circle diameter x π:
c = πd
c = 17π
Simplify 4a x 7b.
| 28ab | |
| 28a2b2 | |
| 28\( \frac{a}{b} \) | |
| 28\( \frac{b}{a} \) |
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.
4a x 7b = (4 x 7) (a x b) = 28ab
If the length of AB equals the length of BD, point B __________ this line segment.
trisects |
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bisects |
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intersects |
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midpoints |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
A quadrilateral is a shape with __________ sides.
4 |
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2 |
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3 |
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5 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.