Question 21

The length of the diagonal and the breadth of a rectangle is 26 cm and 10 cm respectively. Calculate its area $$(in cm^2)$$

Solution

Let the length of rectangle = $$l$$ cm and breadth, $$b=10$$ cm

=> Diagonal, $$d^2=l^2+b^2$$

=> $$l^2=(26)^2-(10)^2$$

=> $$l^2=676-100=576$$

=> $$l=\sqrt{576}=24$$ cm

$$\therefore$$ Area = $$24\times10=240$$ $$cm^2$$

=> Ans - (C)

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