Posted by bs on Monday, February 11, 2013 at 10:53am.
2.Find the length of the arc in a circle if the radius of the circle is 24cm and the degree of the arc is 90o
3.Find the length of the arc if a circle if the degree if the arc is 120o and the length of the radius is 8cm.
4. A circle has a radius of 7. Find the diameter (D) and the (A).
5. Find the circumferemce of a circle if the area is 9/25pift^2.

Math rem  Reiny, Monday, February 11, 2013 at 11:32am
#1 and #2 are the same type of problem
I will do #2
whole circumference = 2π(8) = 16π
but 120° is 1/3 of the circle, thus the arc is 1/3 the circumference
= (1/3)(16π) = 16π/3 cm or appr 16.755 cm
#4 ??? come on now!!!
#5 area = πr^2
πr^2 = (9/25)π
r^2 = 9/25
r = 3/5
circumf = 2πr = 2π(3/5) = 6π/5 ft or appr. .....
Answer This Question
Related Questions
 apex geometry  Hannah constructed two similar circles as seen in the image ...
 Geometry  A 60 degree arc, of circle A, has exactly the same lenght as a 45 ...
 geometry  A 45 degree arc of circle D has the same length as a 30 degree arc of...
 math  Whats the difference between an arc [of a circle]'s length and measure? ...
 Math Arc Length  Find the arc length corresponding to an angle of a degrees on ...
 math  Find the length of an arc of a circle of radius 6cm which subtends an ...
 math  An angle of 1.8 radians at the center of the circle subtends an arc of ...
 Geometry  What is the circumference of the circle if the radius is: 5xMy ...
 Math  I think this will be the last one. Find the radius of circle C if the ...
 Geometry  If a central angle of 90 degrees defines an arc on circle R that has ...
More Related Questions