FINDING RADIUS FROM ARC LENGTH WORKSHEET

Here s is the length of arc.

Problem 1 :

s = 12π/5 ; θ = π/2 ; r = ?

Problem 2 :

s = 50π/3 in ; θ = 5π/6 ; r = ?

Problem 3 :

s = 7ft ; θ = 3π/4 ; r = ?

Problem 4 :

s = 20 cm ; θ = 2π/3 ; r = ?

Problem 5 :

s = 12 in ; θ = 5 ; r = ?

Problem 6 :

s = 7 in ; θ = 3 ; r = ?

Problem 7 :

s = 15 m ; θ = 270 ; r = ?

Problem 8 :

s = 8 yd ; θ = 225 ; r = ?

Answer Key

1) The radius r is 24/5 .

2) The radius r is 20 .

3) The radius r is 196/66 ft .

4) The radius r is 105/22 cm .

5) The radius r is 12/5 in.

6) The radius r is 7/3 in.

7) The radius r is 1/18 m.

8) The radius r is 28.125 yd.