Exam
Maths Puzzle
Numerical Ability
the distance between two parallel chords of length 32cm and 24cm in a circle of radius 20cm is?
a)4 or 28 b) 3 or 21 c) 2 or 14 d) 1 or 7
Read Solution (Total 1)
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- first let the distance of 1st chord 32 cm from center is a and perpendicular from the center bisects the chord so using pythagoras we can find out a = 12cm (20^2=a^2+16^2)
similarly distance of 2nd chord from the center i.e b can be obtained by (20^2=b^2+12^2) b= 16
so a+b = 28
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