Question

Find the area of the triangle in which a=91m,b=98m,c=105m.

Answer 1

semiperimeter (s) = (91 + 98 + 105)/2
=(294)/2 = 147 m

area of traingle =root {s (s-a)(s-b)(s-c)}
=root {147 x (147-91)(147-98)(147-105)}
=root {147 x 56 x 49 x 42}
=root {7 x 7 x 3 x 8 x 7 x 7 x 7 x 7x 6 }
=7 x 4 x 3 x 7 x 7
=343 x 12 = 4116 m^2

Answer 2

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