In the diagram at right, ⊙M has radius 14 feet and ⊙A has radius 8 feet. Line ER is tangent to both ⊙M and ⊙A. If NC=17 feet, find ER. Homework Help ✎
Use the sectors in circles D and E to answer the following questions. Homework Help ✎
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Question 5
5.
In the figure below, find the interior height (h) of the obtuse triangle. Show all work. Homework Help ✎
Question 6
6.
A cylinder with volume 500π cm^3 is similar to a smaller cylinder. If the scale factor is 15 what is the volume of the smaller cylinder? Explain your reasoning. Homework Help ✎
A six-year old house, now worth $175,000, has had an annual appreciation of 5%. Homework Help ✎
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In the figure at right, line EX is tangent to ⊙O at point X. OE=20 cm and XE=15 cm. Homework Help ✎
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Question 13
13.
Question 2
2.
What is the ratio of the arc length to the radius of circle D? Leave your answer in terms of π.
Question 3
3.
What is the ratio of the arc length to the radius of circle E?
Question 4
4.
The ratio of the arc length to the radius of a circle is called a radian. Why do you think all sectors with a central angle of º30º have the same radian measure?
Question 7
7.
What is the multiplier?
Question 8
8.
What did it cost when new? Round to the nearest dollar.
Question 9
9.
Write a function of the form f(t)=ab^t, where t is the time in years, that represents the value of the house since it was new.
Question 10
10.
What is the area of the circle?
Question 11
11.
What is the area of the sector bounded by OX and ON?
Question 12
12.
Find the area of the region bounded by XE, NE, and \overset\frown{NX}.
Multiple Choice: In the circle below, CD is a diameter. If AE=10 , CE=4 , and AB=16 , what is the radius of the circle? Homework Help ✎