SOLUTION: An arc of a cirle of radius 7cm subtends an angle of 120° at the centre. Find its perimeter.

Click here to see ALL problems on test

Question 1142954: An arc of a cirle of radius 7cm subtends an angle of 120° at the centre. Find its perimeter.

Found 3 solutions by ankor@dixie-net.com, Alan3354, greenestamps:
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website!
An arc of a circle of radius 7cm subtends an angle of 120° at the centre.
Find its perimeter.
:
Assuming they mean the perimeter of the of the circle segment subtended by 120 degrees
() + 7 + 7 = 28.66 cm

Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website!
Find the perimeter C (circumference).
The arc is 1/3 of C.
===============
When we assume, it's not a well defined problem.

Answer by greenestamps(13200)   (Show Source):
You can put this solution on YOUR website!

The statement of the problem is defective.

An arc of a circle is not a closed figure; it does not have a perimeter.