Question

Find the length of arc CD. Use 3.14 for .

Round to the nearest tenth.
5 7.9 cm
66.49
[ ? ]cm
Enter

Answer 1

9514 1404 393

Answer:

9.2 cm

Explanation:

The arc length is given by ...

s = rθ . . . . . where r is the radius, and θ is the central angle in radians

Here, we have ...

s = (7.9 cm)(66.4/180π) = 7.9·66.4·3.14/180 cm ≈ 9.2 cm

Arc length CD is about 9.2 cm.