In a circle diameter of 8in. find the arc length subtented on the circumference by a central angle of 90degrees.

Please answer clearly and explain the solution clearly and easy to understand. Thanks!
(guaranteed medal for a good answer)

Question

In a circle diameter of 8in. find the arc length subtented on the circumference by a central angle of 90degrees.

Please answer clearly and explain the solution clearly and easy to understand. Thanks!
(guaranteed medal for a good answer)

sriram · Answer

u surely know to make the question attractive!

sriram · Answer

circumference=2*pi*r=2*3.14*8 inches=50.265
angle at center =90 degrees
hence if u imagine 1/4 th of the circumference is involved
hence arc length=50.265/4=12.566

anonymous · Answer

90 is a quarter of the circle so the arc is a quarter of the circumference.