A Problem with chord length and distance between them
Asked by | 6th Mar, 2010, 06:11: PM
drop perpendiculars from the center O to the chords, naturally these perpendiculars have to meet the chords at their mid points.
let M and N be the mid points of the chords AB,CD respectively.
since the chords are parallel, so MON is a straight line.
let MO= x then NO=7-x... since the dist between the chords is given as 7 cm.
consider triangles OMB,
consider triangle OND,
if r is the radius, then, by Pythagoras' theorem we get
solving we get,
Answered by | 7th Mar, 2010, 10:09: AM
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