Question

find the area of the triangle in which a 13 m b 14 m c 15 m​

Answer 1

semi perimeter= 21

herons formula=√21(21-13)(21-14)(21-15)

√21×8×7×6

√3×7×2×2×2×7×2×3

7×2×2×3

=84m^2 - answer

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