1. The length of the diagonal and the breadth of a rectangle are 17 cm and 8 cm respectively. Find its perimeter (in cm).
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By: anil on 05 May 2019 02.06 am
Let the length of rectangle = $$l$$ cm and breadth, $$b=8$$ cm => Diagonal, $$d^2=l^2+b^2$$ => $$l^2=(17)^2-(8)^2$$ => $$l^2=289-64=225$$ => $$l=sqrt{225}=15$$ cm $$ herefore$$ Perimeter = $$2 imes(15+8)=2 imes23=46$$ cm => Ans - (B)
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