Question

The sides of a triangular plot are in the ratio of 3:5:7 and it's perimeter is 300 cm. Find the area

Answer 1

Answer:1500cm²

Step-by-step explanation:

Given: sides are in ratio of 3:5:7

so let the common multiple be X

therefore,

p= 3x + 5x + 7x

300= 15x

20 = x

so, the sides are

60,100 and 140

so by herons formula,

ar. = √s (s -a) (s-b) (s-c)

=√150(150-60)(150-100)(150-140)

=√150×90×50×10

=100×5×3

=1500cm²