Question

uuse is 6 cm a
2
Find the area of a triangle whose sides are
(i) 3 cm, 4 cm and 5 cm.​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer :-

• Area of the triangle is 6cm².

Given :-

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

To Find :-

• Area of the triangle.

Solution :-

Here

sides of the triangle are

• 3cm
• 4cm
• 5cm

As we know that

Area of a triangle is

• √[s (s - a) (s - b) (s - c)]

Let

• a = 3
• b = 4
• c = 5

⇒ S = [a + b + c]/2

⇒ S = [3 + 4 + 5]/2

⇒ S = 12/2

⇒ S = 6

Put the values in the formula

⇒ Area of the triangle = √[6 (6 - 3) (6 - 4) (6 - 5)]

⇒ Area of the triangle = √[ 6 × 3 × 2 × 1

⇒ Area of the triangle = √36

⇒ Area of the triangle = 6cm²

Hence, the area of the triangle is 6cm².