Question

if the sides of a triangle is 3cm,4cm,and 5cm then find its area of triangle​

Answer 1

Answer:

6cm²

Step-by-step explanation:

suppose a=3cm, b=4cm, c=5cm.

then we know that, s = (a+b+c)/2

therefore, s = (3+4+5)/2 = 6

and area of a triangle = √(s(s-a)(s-b)(s-c))

hence, area = √(6(6-3)(6-4)(6-5))

and area = 6cm². Ans