Question

Find the area of a triangular whose sides are 3 cm, 4 cm and 5 cm.​

Answer 1

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

Answer 2

$\huge \fbox \red{❥ Answer}$

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=2a+b+2=23+5+4cm=6 cm

We use the formula,

Δ=√s(s−a)(s−b)(s−c).

∴Δ=√6(6−3)(6−5)(6−4)cm2=6×3×1×2 sq.cm

=6 sq.cm