Question

व्हाट विल द एरिया ऑफ द ट्रायंगल विद साइड्स 3 सेंटीमीटर 4 सेंटीमीटर एंड 5 सेंटीमीटर​

Answer 1

Answer:

36 is the right answer may be

Answer 2

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Question :

What will be the area of triangle which sides are 3cm, 4cm and 5cm

❦______________________❦

Answer :

Area of triangle is 6cm²

$\huge{\underline{\bf{\blue{Step\: by \:step\: explanation :}}}}$

GiveN:

• Sides of triangle are 3cm, 4cm and 5cm

To finD :

• Area of triangle

Using formula :

Heron's formula →

$\small{\bf{\pink{Area \:of\: ∆ = \sqrt{s(s - a)(s - b)(s - c)} }}}$

Where :

• s = Semi perimeter
• a = 1st side of triangle
• b = 2nd side of triangle
• c = 3rd side of triangle

Solution :

Finding Semi perimeter :

$\large{\bf{s\:=\: \frac{ sum \: of \: sides \: of \: triangle \: }{2}}}$

→ $\large{\bf{s \:=\:\frac{3 + 4 + 5}{2} }}$

→ $\large{\bf{\boxed{\pink{s = 6}}}}$

Finding perimeter of triangle using heron's formula:

$\small{\bf{Area \:of\: ∆ = \sqrt{6(6 - 3)(6 - 4)(6 - 5)} }}$

→$\small{\bf{Area \:of\: ∆=\: \sqrt{6 \times 3 \times 2 \times 1} }}$

→ $\large{\bf{ \sqrt{36} }}$

→ $\small{\bf{6cm²}}$

Hence,

$\large{\bf{\boxed{\green{Area\: of \:triangle\: is\:=\:6cm²}}}}$