The edges of a triangular board are 6 cm, 8 cm and 10 cm long. The cost of painting it at the rate of 9 paise per $cm ^2$ is
  • A
    ₹ 2
  • B
    ₹ 2.16
  • C
    ₹ 2.48
  • D
    ₹ 3
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