| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.79 |
| Score | 0% | 56% |
Which of the following statements about a parallelogram is not true?
the area of a parallelogram is base x height |
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opposite sides and adjacent angles are equal |
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the perimeter of a parallelogram is the sum of the lengths of all sides |
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a parallelogram is a quadrilateral |
A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).
If side x = 11cm, side y = 10cm, and side z = 5cm what is the perimeter of this triangle?
| 32cm | |
| 26cm | |
| 25cm | |
| 34cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 11cm + 10cm + 5cm = 26cm
A cylinder with a radius (r) and a height (h) has a surface area of:
π r2h2 |
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π r2h |
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4π r2 |
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2(π r2) + 2π rh |
A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.
A(n) __________ is to a parallelogram as a square is to a rectangle.
quadrilateral |
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triangle |
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rhombus |
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trapezoid |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
Solve for c:
c - 6 < \( \frac{c}{4} \)
| c < 8 | |
| c < 1\(\frac{7}{13}\) | |
| c < -\(\frac{24}{43}\) | |
| c < \(\frac{8}{33}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the < sign and the answer on the other.
c - 6 < \( \frac{c}{4} \)
4 x (c - 6) < c
(4 x c) + (4 x -6) < c
4c - 24 < c
4c - 24 - c < 0
4c - c < 24
3c < 24
c < \( \frac{24}{3} \)
c < 8