What is the length of an arc of circle, knowing the central angle of (pi/4) and radius of 7cm?

stuck on this HW question, any help appreciated!

1 Answer

l=0.096cm

Explanation:

Length of arc,l= (theta)/360x2pir
theta=(pi)/4 ,radius=7cm
Hence,,l=(pi)/4÷360x2pir
=>(pi)/4x(1)/360x2x(22)/7x7
=>(pi)/1440x2x(22)/cancel 7xcancel7
=>(44pi)/1440
=>cancel44^11x(22)/7x(1)/cancel 1440^360
=>(242)/2520
l=0.096cm
Pls check for any mistakes