Question

Area of triangle whose side are 5,6,7 cm

Answer 1

In the above all the three sides of a triangle are given and it is asked to find the area of the triangle and for that after applying heron's formula here is the answer:-

Semi perimeter (s) = (5+6+7)÷2

= 18÷2 = 9cm

Area = √s(s-a)(s-b)(s-c)

= √9(9-5)(9-6)(9-7)

= √9×4×3×2

= 2×3√3×2

= 6√6 cm^2

= 14.697 cm^2 (approx.)

Hope this answer will help you.

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