| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.53 |
| Score | 0% | 71% |
A quadrilateral is a shape with __________ sides.
4 |
|
3 |
|
5 |
|
2 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
The dimensions of this cylinder are height (h) = 7 and radius (r) = 2. What is the surface area?
| 36π | |
| 10π | |
| 108π | |
| 192π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(22) + 2π(2 x 7)
sa = 2π(4) + 2π(14)
sa = (2 x 4)π + (2 x 14)π
sa = 8π + 28π
sa = 36π
Simplify (5a)(3ab) - (4a2)(8b).
| 96ab2 | |
| -17a2b | |
| 17ab2 | |
| 96a2b |
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.
(5a)(3ab) - (4a2)(8b)
(5 x 3)(a x a x b) - (4 x 8)(a2 x b)
(15)(a1+1 x b) - (32)(a2b)
15a2b - 32a2b
-17a2b
The dimensions of this cube are height (h) = 4, length (l) = 6, and width (w) = 3. What is the volume?
| 160 | |
| 108 | |
| 72 | |
| 135 |
The volume of a cube is height x length x width:
v = h x l x w
v = 4 x 6 x 3
v = 72
What is the area of a circle with a radius of 3?
| 9π | |
| 49π | |
| 5π | |
| 6π |
The formula for area is πr2:
a = πr2
a = π(32)
a = 9π