NCERT Mathematics Class 9 Exemplar Ch 12 Heron's Formula Part 2

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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

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