Question

The sides of a right triangle are in the ratio of 3:4:5 and its perimeter is 12 cm find its area

Answer 1

Taking sides as 3x 4x 5x .
Can also be done through Pythagoras Theorem.

Answer 2

$HIII \: \: BUDDY!!!$


Let the common ratio be x
Sides= 3x, 4x, 5x


Now,

Perimeter means the sum of all the sides of a triangle.


Therefore,


$3x + 4x + 5x = 12 (given)$










$= > 7x + 5x = 12$








$= > 12x = 12$










$= > x = 1 ans$




Therefore, the sides are


3x= 3× 1= 3°


4x= 4× 1= 4°


5x= 5×1= 5°





Area of a triangle=
$\frac{1}{2} \times base \times height$


= 1/2×3× 4



= 6 cm^2. ans