Question

Find the area of trangle whose sides in are ration3:4:5 and oerimeter [s 48cm

Answer 1

its a right angle triangle from the ratio
12x = 48
x =4
so sides forming right angle are
16 and 12
are of triangle = 1/2*12*16
= 96

Answer 2

Let triangle ABC be the required triangle Let the common multiple be X   The sides are -  3x , 4x and 5x  Perimeter of the triangle= Sum of all sides                                   48 =. 3x+4x+5x                                    12x=48                                       x=4  Sides are 3x= 12 4x=16 5x=20  Area = 1/2*12*16=96 sq. Cm