Question

2. A triangle whose sides are 15 cm, 25 cm and 30
em respectively, then find the area of the
triangle .​

Answer 1

Answer:

50√7cm.

HOPE IT'S HELPS YOU...

Answer 2

$\huge{\bf{\underline{\red{Solution :}}}}$

Suppose :

• a = 15 cm
• b = 25 cm
• c = 30 cm

Therefore , Semi- perimeter :-

$\implies \bold{\sf{s = \frac{a + b + c}{2}}}$

$\implies \bold{\sf{\frac{15 + 25 + 30}{2} = 35 \ cm}}$

Now Using Heron's Formula to Find Area of Triangle :

$\implies \bold{\sf{\sqrt{s(s-a)(s-b)(s-c)}}}$

$\implies \bold{\sf{\sqrt{35(35 - 15) (35 - 25) (35 - 30)}}}$

$\implies \bold{\sf{\sqrt{35 \times 20 \times \times 10 \times 5}}}$

$\implies \bold{\sf{2 \times 5 \times 5 \sqrt{2 \times 7}}}$

$\implies \bold{\sf{50\sqrt{14} cm^{2} }}$

Area of Triangle - 50√14 cm²(Answer)

$\rule{200}2$