Ask Question
6 March, 02:14

2. What is the radius of a circle if the length of a 45° arc is 9?

+5
Answers (1)
  1. 6 March, 03:36
    0
    Answer: 11.46

    Step-by-step explanation:

    Formula for calculating the length of an arc is theta/360 * 2Πr. Where;

    length of the arc (L) = 9

    Theta = 45°

    L = theta/360 * 2Πr

    9 = 45/360 * 2Πr

    9 = 1/8 * 2Πr

    9 = Πr/4

    Πr = 36

    r = 36/Π

    r = 11.46

    Substituting we have,

    9 = r * 45°

    r = 9/45
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “2. What is the radius of a circle if the length of a 45° arc is 9? ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers