Question

the sides of a triangle are in the radio 3:4:5:. if it's perimeter is36cm, then what is it's area​

Answer 1

Answer:

54cm²

Step-by-step explanation:

Let the ratio be 3x,4x&5x

Perimeter=sum of all sides=36cm

3x+4x+5x=36

12x=36

x=3

3x=3*3=9

4x=4*3=12

5x=5*3=15

IF WE DRAW THE DIAGRAM OF THE GIVEN TRIANGLE THE TRIANGLE WILL BW A RIGHT ANGLE TRIANGLE

THEREFORE: h=12;b=9

Area=1/2*h*b

       =1/2*12*9

       =54cm²