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NCERT Mathematics Class 9 Exemplar Ch 12 Heron՚s Formula Part 2
8. The area of an isosceles triangle having base 2 cm and the length of one of the equal sides 4 cm, is
(A)
(B)
(C)
(D)
Answer: A
9. The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at the rate of 9 Paise per cm2 is
(A) Rs 2.00
(B) Rs 2.16
(C) Rs 2.48
(D) Rs 3.00
Answer: B