Question

Find the area of triangle whose sides are 5, 6and 7mm.

Answer 1

use herons formula:

(s(s-a)(s-b)(s-c))^1/2

where s = a+b+c/2=9mm

a=5mm

b=6mm

c-7mm

solve on your own

ans is 14.69mm^2

Answer 2

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