3 years ago

What is the length of ad

Mathematics

1 answer:

postnew [5]3 years ago

5 0

Answer:

15.7 cm

Step-by-step explanation:

The length (s) of an arc of a circle of radius r with a central angle of θ radians is ...

s = rθ

Here, the radius is given as 7.9 cm, and the arc of interest is the supplement of 66.4°, so is ...

θ = π·(1 - 66.4/180) ≈ 1.9827 . . . . radians

Then the arc length is ...

s = (7.9 cm)·(1.9827) ≈ 15.7 cm

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