Question

The lengths of of the sides of a triangle are in the ratio 3:4:5 and it's perimeter is is 144cm.find the area of a triangle

Answer 1

Answer:

ezgxgchxhxycyxhchxyztxtstxg

Answer 2

Answer:

Perimeter of rectangle=a+b+c

144 =3x+4x+5x

144 =12x

hence 12x=144

x=144/12

x=12

First side=a=3x=3×12=36

Second side=b=4x=4×12=48

Third side=c=5x=5×12=60

by using formula

area=864units