Triangles
116a
8 cm equilateral triangle
117a. What is the probability that a randomly selected household has no pets?
222/1000=22.2%
113a. What is the sum of the interior angles of a dodecagon?
1800
116b
30.9 feet
27/cos29
111b
What is the area of the circle
81pi
117b. What is the probability that a randomly selected household has a pet?
1-222/1000=778/1000=77.8%
113b. How many sides does a regular polygon have if its central angle measures 35∘?
Impossible. In a regular polygon, the central angle must be a factor of 360∘.
116c
15.2
sqrt231
pythagorean theorem
111c
Which is greater purple or green?
Purple
117c. If a household is selected at random, what is the probability that the household earns under $35,000 and owns a dog?
130/1000=13%
113c. If the sum of the interior angles of a regular polygon is 900∘, how many sides does the polygon have?
7 sides
116d
3.7
6/tan58
tangent
111a.
a. What is the area of the dodecagon?
588
117d. What is the probability that a randomly selected household earns under $35,000 or owns a dog?
64.1%
113d. If the exterior angle of a regular polygon is 15∘, what is its central angle?
15 degrees
116e
7 sqrt2
117f. What is the probability that a randomly selected household that earns under $35,000 also owns a dog?
33.8%
113e. What is the measure of an exterior angle of a regular polygon with 10 sides?
36 degrees