1. The length of one side and the diagonal of a rectangle are 20 cm and 29 cm respectively. Find the length of its other side (in cm).
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By: anil on 05 May 2019 02.04 am
Let the length of rectangle = $$l$$ cm and breadth, $$b=20$$ cm => Diagonal, $$d^2=l^2+b^2$$ => $$l^2=(29)^2-(20)^2$$ => $$l^2=841-400=441$$ => $$l=sqrt{441}=21$$ $$ herefore$$ Length of its other side = 21 cm => Ans - (C)
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