| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.88 |
| Score | 0% | 58% |
A quadrilateral is a shape with __________ sides.
2 |
|
3 |
|
5 |
|
4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
The formula for the area of a circle is which of the following?
c = π d |
|
c = π r |
|
c = π d2 |
|
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.
A cylinder with a radius (r) and a height (h) has a surface area of:
4π r2 |
|
π r2h2 |
|
π r2h |
|
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.
Simplify (y - 3)(y + 9)
| y2 - 6y - 27 | |
| y2 + 12y + 27 | |
| y2 - 12y + 27 | |
| y2 + 6y - 27 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y - 3)(y + 9)
(y x y) + (y x 9) + (-3 x y) + (-3 x 9)
y2 + 9y - 3y - 27
y2 + 6y - 27
If the base of this triangle is 1 and the height is 7, what is the area?
| 3\(\frac{1}{2}\) | |
| 31\(\frac{1}{2}\) | |
| 77 | |
| 82\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 1 x 7 = \( \frac{7}{2} \) = 3\(\frac{1}{2}\)