Q24 of 69 Page 240

The question consists of two statements namely, Assertion (a) and Reason (R). Please select the correct answer.











Assertion (A)



Reason (R)



The area of an isosceles triangle having base = 24 cm and each of the equal sides equal to 13cm is 60cm2.



If 2s = (a + b+ c) where a, b, c are the sides of a triangle, then area = .


From the given question, we have

a = 24 cm, b = 13 cm and c = 13 cm


∴ s =


=


=


= 25 cm


Now, by using heron’s formula we have:


Area of triangle =


=


=


= 5 × 12


= 60 cm2


Also, if 2s = (a + b + c) where a, b and c are the sides of the triangle then:


Area =


∴ Assertion and reason both are correct


Hence, option (a) is correct

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The question consists of two statements namely, Assertion (a) and Reason (R). Please select the correct answer.











Assertion(A)



Reason (R)



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 23

The question consists of two statements namely, Assertion (a) and Reason (R). Please select the correct answer.











Assertion (A)



Reason (R)



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 25

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