Question

How to find the area of triangle if its first side is 90m and second is 120m and third is 90 m

Answer 1

Answer:

Please tell me the breadth and height then I can answer your question .

Answer 2

Let the sides of triangle be a, b and c

Here, a=90m b=120m and c=90m

S=(a+b+c)/2=(90m+120m+90m)/2=300m/2=150m

$Area \: of \: triangle = \sqrt{s(s - a)(s - b)(s - c)} \\ \: \: = \sqrt{150(150 - 90)(150 - 120)(150 - 90)} \\ \: \: = \sqrt{150 \times 60 \times 30 \times 60} \\ \: \: = \sqrt{30 \times 5 \times 60 \times 30 \times 60} \\ \: \: = 1800 \sqrt{5}$

Area of triangle = 1800√5 m^2