Question

Find the length of the arcin terms of pi.90°10AB = [?]THint: The arc is only part of the circle.

Answer 1

For the given circle:

The radius of the circle = 10

We need to find the length of the arc AB

The central angle opposite to the arc AB = 90 degrees

So, the length of the arc =

$(90\cdot\frac{\pi}{180})\cdot10=\frac{\pi}{2}\cdot10=5\pi$

So, the answer will be AB = [ 5 ] π