# math

posted by .

A chord of a circle 38.8 cm long is subtended by a 150 degree central angle.Calculate the radius of the circle.

• math -

sin 75° = 19.4/r
r = 20.08

## Similar Questions

1. ### geometry

suppose the diameter of a circle is 20in. long and a chord is 16in. long. What is the distance from the center of the circle to the chord Draw a radius from the center to the end of the chord. THe draw a radius from the center perpendicular …
2. ### Math

If the hypotenuse of a chord on a circle is 8 and it is an isosceles triangle with a 90 degree angle, what is the arc subtended by the angle?
3. ### Trigonometric Functions

A 2(pi) cm wire is stretched along a circle of radius 4cm. The degree measure of the central angle subtended by this wire arc is what?
4. ### Geometry

How would you solve these? The radius of a circle is 34 meters long, and a chord of the circle is 60 meters long. How far is the chord from the center of the circle?
5. ### College math

in a circle of radius 7m, find the length of the arc subtended by a central angle of 42.0degrees
6. ### algebra

of radius 54 meters subtended by the central angle 1/9 radian. s(arc length = meters How is the answer 6?
7. ### maths

A chord subtends an angle of 68 degree at the centre of a circle of radius 200 mm.Find the length of the chord.
8. ### algebra2

a chord in a circle makes an angle of 45° with the radius. if the chord is 4 cm long, what is the radius of the circle
9. ### Mathematics

Mathematics: A chord of radius 12cm subtends an angle of 150 degree at the centre of the circle. Calculate. A. Perimeter of the circle (Ps) B. Area of the circle. (Account) C. Length of the circle (Lc) D. Length of the arc (Last) E. …
10. ### math

in a circle of radius 6cm , a chord is drawn 3cm from the circle (a)calculate the angle subtended by the chord at the centre of the circle

More Similar Questions