Question

The sides of a triangle are in the ratio of 3 : 4 : 5. If its perimeter is 36 cm, then what is its area?

Help Guys​

Answer 1

Answer:

Answer: The area of triangle is 54 cm².

Step-by-step explanation:

mark me as brainlist please

Answer 2

Answer:

let the sides be x.

then 3x,4x,5x

perimeter of triangle = 3x+4x+5x

36 = 12x

x = 36/12

x = 3cm

(1st side) a= 3×3 = 9cm

(2nd side) b = 4×3 = 12cm

(3rd side) c = 5×3 = 15cm

s(semi-perimeter) = a+b+c/2

9+12+15 / 2 = 36/2 = 18cm

Area of triangle =√s(s-a)(s-b)(s-c)

√18(18-9)(18-12)(18-15)

√18×9×6×3

√2916 = 54cm²