Question

The sides of a triangular plot are in the ratio 3:5:7 and its perimeter is 300m.Find its area options; a)4√30 b)8√30 c)12√30 d)16√30

please ans the question fastly....and one more thing if u want ur ans to be the brainliest than give me the correct ans out of the one given above.....Thank u guys....ans me soon and fast I ll be one among ur follower and thanker....bye bye ​

Answer 1

Step-by-step explanation:

Let the sides of the triangle be 3x, 5x and 7x repsectively and since the perimeter is 300m

So, 3x + 5x + 7x=300

15x=300

x=300/15

x=20 m

so,length of one side=60 m

length of second side=100 m

and length of third side=140 m

Now perimeter=300m

therefore semi-perimeter=150 metre

now according to herons formula -

Area = root 150* (150-60) * (150-100) * (150-140)

= root 150 * 90 * 50 * 10

= root 30*5 * 30*3 * 5*10 *10

= root 30^2 * 5^2 * 10^2 *3

= 30 * 5 * 10 * root 3

= 1500 root 3

Answer 2

option (b) correct

Step-by-step explanation:

answer