Question

Find the radius of the circle in which a central angle of 60° intercepts an arc of length 37.4 cm. (use ∏=22/7)

• A. 35.4 cm
• B. 37.4 cm
• C. 21.1 cm
• D. 35.7 cm

Answer 1

Answer:

D. 35.7 cm

l= 37.4 cm 𝚹= 60° = ∏/180 x 60 = ∏/3 r = l/𝚹 = 37.4 x 3 / ∏ = 37.4 x 3 x 7 / 22 r=35.7 cm