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
Bounce light knowledge
Apr 6, 2018

#l=0.096cm#

Explanation:

Length of arc,#l##=# #(theta)/360#x#2pir#
#theta=(pi)/4# ,#radius=7cm#
#Hence,,l=(pi)/4÷360#x#2pir#
#=>(pi)/4#x#(1)/360#x#2#x#(22)/7#x#7#
#=>(pi)/1440#x#2#x#(22)/cancel 7#x#cancel7#
#=>(44pi)/1440#
#=>cancel44^11#x#(22)/7#x#(1)/cancel 1440^360#
#=>(242)/2520#
#l=0.096cm#
Pls check for any mistakes

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