Question

10. The sides of a triangle are in
the ratio of 3: 5:7 and its
perimeter is 300 cm. Its area
will be:​

Answer 1

Answer:

Perimeter = Sum of all sides

So,

Let the ratios be - 3x,5x and 7x

Now,

⟹3x + 5x + 7x = 300

⟹ 15x = 300

⟹ x = 300/15

So, x = 20

Now given ratio = 3x,5x and 7x

So,

3x = 3×20 = 60

5x = 5× 20 = 100

7x = 7 × 20 = 140

Hence, Measurements of all sides = 60, 100 and 140