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Maths, Addmaths and Statistics: Post your doubts here!

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To find arc BC apply the formula 60/360*2*pie*(12); 12 is the radius of arc BC. you'll get 4pie. and for the ii part. find the arc AED by applying the formula for circumference of circle which is 2pie(r). since it's semicircle so we'll divide by 2 and arc length will be 3pie as the radius of arc AED is 3. so 3pie/4pie= 3/4. :)
 
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(ii) b)

FC =FE + ED + DC
-EF + ED -CD (Opposite sides)
FC=-q +2p -r

c)
AY = 3/4 2p
AY = 3/2p = 1.5p
=FA + AY
-AF +AY
-r +1.5p
AY =1.5p -r

d)

YX=YB + BC + CX
YB - CB + 1/2CD
YX = 0.5p - q + 0.5r

are the answers correct .. If they are I would like to thank you .. because this will be the first time in my life that I have done a vector question correct :D
 
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