2:Sides of a triangle are in the ratio of 12: 17: 25 and its perimeter is 540cm. Find its area
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Step-by-step explanation:
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Step-by-step explanation:
12x +17x + 25x = 540
54x =540
x = 10
Therefore the value x is 10
12x =12 *10 =120
17x =17 *10=170
25x= 25 * 10=250
The sides of the triangle are 120,170,250
To find area of triangle
S = a+b+c/2
= 120 +170 +250 /2
=270
By using herons formula
= root of s( s-a) (s-b) (s-c)
=root of 270(270-120) (2 70-170) (270-250)
= root of 270 *150*100*20
= root of 81000000
= 9000cm
Therefore the area of the triangle is 9000cm
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