Question

Find the area of triangle whose sides are 13 cm ,14 cm and 15 cm ?

Answer 1

Step-by-step explanation:

to find the angle of triangle

Using the formulas

A=√s(s﹣a)(s﹣b)(s﹣c)..........√all are in under root

s=a+b+c/2

Solving forA

A=1/4﹣√a^4+2(ab)^2+2(ac)^2﹣b^4+2(bc)^2﹣c^4

=1/4·√-13^4+2·(13·14)^2+2·(13·15)^2-14^4+2·(14·15)^2-15^4

=84cm²

Answer 2

EXPLANATION:

FIRST FIND OUT S (BY ADDING THE SIDES AND THEN DIVIDE IT BY 2) NOW, BY USSING HERONS FORMULA : ✓S(s-a)(s-b)(s-c) , We CAN FIND OUT THE AREA OF TRIANGLE.