Question

observe the above triangles carefully.Are the sides PQ and XZ equal? why?​

Answer 1

Answer:

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

⇒To find out: Area of triangle

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

$Therefore, S = \frac{ \ \alpha + b + 2}{2} = \frac{3 + 5 + 4}{2} cm = 6cm$

⇒We use the formula,

$∆ = \sqrt{s(s - \alpha )( s -b(s - c) }$

$Therefore, ∆ = \sqrt{6(6 - 3)(6 - 4)} cm {}^{2}$

$= \sqrt{6 \times 3 \times 1 \times 2sq.cm}$

$= 6 \: sq.cm$