For a circle with the radius of 15 cm what is the length of an ark intercepted by angle measuring 120?

Hello from MrBillDoesMath!

10 Pi

Discussion:

Circumference of full circle = 2 Pi r = 2 Pi (15) = 30 Pi. As a circle contains 360 degrees, 120 degrees is one third of the circle and subtends an arc of  

(30 Pi)/3 = 10 Pi

Thank you,

MrB

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d