Question

The sides of a triangle are 3 cm, 4 cm and 5 cm. What is its area?

a) 6 cm2 b) 5 cm2

c) 8 cm2 d) 10 cm2​

Answer 1

Answer:

8 cm sq is the answer.. thx to my answer mark me as brainlist

Answer 2

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