Question

sides of a triangle are 45 39 and 42cm find its area​

Answer 1

Step-by-step explanation:

45+39+42/2

=63

=√63(63-45)(63-42)(63-39)

=√7×9×9×2×5×3×3×8

=3×9×4√35

108√35 cm^2

Answer 2

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Step-by-step explanation: