Question

10. Find the area of a triangle whose sides are
50 metres, 78 metres, 112 metres respectively.
​

Answer 1

Area of triangle- side x side x side

Hence;

50x78x112

=436800

Answer 2

Given :

⬤ Sides of Triangle are 50 m , 78 m and 112 m .

To Find :

⬤ Area of Triangle .

Solution :

Let :

• Side a = 50
• Side b = 78
• Side c = 112

Now :

s = a + b + c/2

s = 50 + 78 + 112/2

s = 240/2

s = 120

Now , We have to Calculate Area of Triangle . Hence ,

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

Area = √120 (120-50) (120-78) (120-112)

Area = √120 × 70 × 42 × 8

Area = √2822400

Area = 1680

Therefore , Area of Triangle is 1680 m².