1. A rectangle with one side of length 4 cm is inscribed in a circle of diameter 5 cm . Find area of the rectangle





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  • By: anil on 05 May 2019 01.50 am
    Given : AB = 4 cm and AC = 5 cm To find : Area of rectangle ABCD = ? Solution : In $$ riangle$$ ABC, => $$(BC)^2=(AC)^2-(AB)^2$$ => $$(BC)^2=(5)^2-(4)^2$$ => $$(BC)^2=25-16=9$$ => $$BC=sqrt{9}=3$$ cm $$ herefore$$ Area of rectangle ABCD = $$AB imes BC$$
    = $$4 imes 3=12$$ $$cm^2$$ => Ans - (B)
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