29. If the diameter of a circle is 10, find the circumference. c. 20 d. 10 a. 20

Question

29. If the diameter of a circle is 10, find the circumference. c. 20 d. 10 a. 20 b. 10 30. Write an equation for a circle with center at P(2, -5) and a diameter of 8 units. a. (x 2)+(y - 5)2 64 b. x+2)2+ (y+ 5)2 8 ?. (x-2)2 + (y + 5)2-16 d. (x+ 2)+ (y-5)2 16 For questions 31-33, refer to the following diagram. 40 31. Name the arc with measure of 140 degrees. c. arc CDE d. arc ABD a. arc DEB b. arc ABC 32. If AD 10, find the length of arc EDC. 5T C. a. 45m b. 45 d. 5 33. Find measure of arc BCD a. 130 degrees b. 230 degrees c. 180 degrees d. 90 degrees

Explanation / Answer

Please post 1 question per post, as per forum rules.

Circumference = 2*pi*r

So, 2r = diameter = 10

So, circumference = 2*pi*r = (2r)*pi = 10*pi

Answer is b.

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