Question

the side of a triangle are 3 cm , 4 cm and 5 cm . what is it areas​

Answer 1

Answer:

3+4+5 = 12 cm

12cm is your answer

Answer 2

Answer:

Given: the sides of a triangle are 3 cm, 5 cm and 4 cm.

To find out: Area of triangle

Solution:-

The lengths of the sides are a=3 cm, b=5 cm, c=4 cm.

∴s=  

2

a+b+2

​  

=  

2

3+5+4

​  

cm=6 cm

We use the formula,

Δ=  

s(s−a)(s−b)(s−c)

​  

.

∴Δ=  

6(6−3)(6−5)(6−4)

​  

cm  

2

 

=  

6×3×1×2

​  

 sq.cm

=6 sq.cm