Question

If the sides of a triangle are in the ratio of 12:5:13 and its perimeter is 120 then the area of A is:
480 sq. unit
O .
360 sq. unit
240 sq. unit
O 120 sq. unit
Market​

Answer 1

Answer:

480

Step-by-step explanation:

perimeter of triangle =sum of all sides

120=12x+5x+13x

120=30x

120/30=x

x=4

12x=12*4=48

5x=5*4=20

13x=13*4=52

area of triangle =A=1

4﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=1

4·﹣484+2·(48·20)2+2·(48·52)2﹣204+2·(20·52)2﹣524=480