How to find arc length
[DOC File]Copyright © by Holt, Rinehart and Winston
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To find the arc-length, we can use the formula . Thus, the arc-length spanned by an angle of 2 radians on a circle of radius 5 inches is 10 inches. b. Before we can use the formula , we need to convert the angle into radians. In order to convert into radians, we can multiply by (which equals 1). (Of course we could use the table we created ...
[DOCX File]PC\|MAC
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Find each arc length. Give your answer in terms of ( and rounded to the nearest hundredth. 10. 11. 12. Find the length of an arc with measure of 45° in a circle with radius 2 mi. 13. Given a circle with an arc length of 15 mm that corresponds to a central angle of 120°. Find the circumference. 14. A windshield wiper blade is 18 inches long.
[DOC File]G.C.B.5.ArcLength2.doc
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Find the degree measure of the arc of a sector with area 36π if the area of the circle is 144π. 9. Two circles have radii 3 cm. and 5 cm. Find the ratio of their areas. 10. The areas of two circles are in the ratio 16 to 9. Find the ratio of their radii. Answers: 1. Area = 36π u2 and arc length = 6π u 4. 7. 2. Area = 147π u2 and arc length ...
[DOC File]Section I: Chapter 1: Unit Circle, Radians, and Arc Length
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Find the measure of θ, in radians, when the pointer rotates to form an arc whose length is 1.38 centimeters. 6 Kathy and Tami are at point A on a circular track that has a radius of 150 feet, as shown in the accompanying diagram. They run counterclockwise along the track from A to S, a distance of 247 feet. Find, to the nearest degree, the ...
[DOC File]Geometry Worksheet
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The length of a minor arc of a circle A is 16 pi cm and AB(AC. Find the radius of the circle. Justify your answer. Journal/Writing Prompts. Have students complete a journal entry summarizing one of the activities. Write a practical problem and solution using arc length or area of a sector. Describe a formula that could be used to find arc length.
[DOC File]Name
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The formula for the length of an arc in a circle is where r = radius and θ = central angleUsing the Arc Length formula, find the measure of each sector’s arc length.Arc Length 1 = _____cmArc Length 2 = _____cmArc Length 3 = _____cmArc Length 4 = _____cm What is the total length of the 4 arcs? _____cm How does it compare to the circumference of the circlie?
[DOC File]Finding Arc Length of a Circle - North Central College
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HW Arc length and Area of a Sector. Use the diagram to find the indicated measure. Find the circumference. 2. Find the circumference. 3. Find the radius. C = 65.98 cm. Find the indicated measure. The exact radius of a circle with circumference 42 meters. The exact diameter of a circle with circumference 39 centimeters
[DOC File]Lesson Title - VDOE
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2. The LADAR satellite is in an orbit 100 km above the Earth’s surface. If the satellite sweeps out an angle of 225 degrees, find the arc length distance that the satellite has travelled in its orbit. Draw a diagram of the satellite’s trajectory. [4A] Note: The Earth’s radius is Rearth = 6.37 x 106 m.
Arc Length (Calculus)
5) Align the string on the minor arc then measure the string’s length by placing the string up to the ruler. Record this measurement below. Measured Minor Arc = _____ 6) Now use the Arc Length Formula to calculate the length of the minor arc. Show all of your work below. How close was it to what you measured in question #5?
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