Question

The sides of a triangle are 3 cm, 5 cm and 6 cm. What is its area?



4√14cm square

5√12cm square

2√5cm square
​

Answer 1

Answer:

area of triangle

1/2 .3×5

1/2.15

7.5

so 5 root 12 is the answer

Answer 2

Answer:

$sides \: of \: triangle \\ \\ = 3cm \: 5cm \: 6cm \\ \\ s \: = semi - peremeter \\ \\ s = \frac{3 + 5 + 6}{2} = 7cm \\ \\ area \: of \: triangle = \sqrt{s({s - a)}{(s - b)}{(s - c)}} \\ \\ \sqrt{7 \times ( 7 - 5)(7 - 3)(7 - 6)} \\ \\ \sqrt{7 \times 2 \times 4 \times 1} \\ \\ 2 \sqrt{14} \: c {m}^{2}$

Here is the answer my friend....