Which expression gives the length of AB if the circumference of the circle is38 cm?145B145A.38B.360145· 387c.36038D.145360387

Question

asked Jun 24, 2023 233k views

1 Answer

Jerome Leclanche · Answer 1 · 2023-06-30T13:30:27+0000

Remember that the formula for the length of the arc is:

$2\pi r\cdot(\theta)/(360)$

Notice that

$2\pi r$

is the formula for the circumference of the circle.

Using this and the data given, we'll have:

$2\pi r\cdot(\theta)/(360)\rightarrow38\cdot(145)/(360)$

Or

$(145)/(360)\cdot38$

Therefore, the correct answer is Option A