help with central angle question?

👨🏻‍🏫 學術台數學

[匿名]

2016-06-22 6:19 pm

Find the length of an arc that has central angle, 50 degrees, and radius, 3.

回答 (1)

fooks

2016-06-22 6:27 pm

Length of circumference
= 2 π r

Length of the arc
= 2 π r × (50/360)
= 2 × 3.14 × 3 × (50/360)
= 2.617 (to 4 sig. fig.)

👍 1 👎 0