A pole of 8 m height casts a 10 m long shadow. Find the height of the tree that casts a 40 m long shadow under similar conditions.
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Solution
Length of a shadow directly varies to the height of the pole So x1y1=x2y2 Here x1=8my1=10mx2=? and y2=40m Substitute 810=x240⇒x2=8×4010=32m So height of the tree is 32m