Question

Do as directed
1. Is the ratio of 230 and 70 same as the ratio of 18kg and 21 kg?
2. Which is smaller or 2/5 or 3/7
3. The sides of a triangle are in the ratio 3:4:5. If the perimeter of the triangle is
84cm, then find its sides

Answer 1

Solution 1 :-

Here, If we compare 230/70 with 18/21

we get ,

230/70 = 18/21

23/7 = 6/7

23/7 ≠ 6/7

Hence, The ratios are not same.

Solution 2 :-

Here, We have to compare 2/5 and 3/7

2/5 = 3/7

0.40 = 0.42

Hence, 0.25 is smaller

Solution 3 :-

Let the ratios be 3x, 4x and 5x

As we know that,

Perimeter of triangle = side + side + side

Therefore,

3x + 4x + 5x = 84

12x = 84

x = 84/12

x = 7

Therefore, Sides of triangle are :-

3 * 7 = 21

4 * 7 = 28

5 * 7 = 35

Hence , The sides are 21cm, 28cm, 35cm $.$

Answer 2

Answer:

Solution 1 :-

Here, If we compare 230/70 with 18/21

we get ,

230/70 = 18/21

23/7 = 6/7

23/7 ≠ 6/7

Hence, The ratios are not same.

Solution 2 :-

Here, We have to compare 2/5 and 3/7

2/5 = 3/7

0.40 = 0.42

Hence, 0.25 is smaller

Solution 3 :-

Let the ratios be 3x, 4x and 5x

As we know that,

Perimeter of triangle = side + side + side

Therefore,

3x + 4x + 5x = 84

12x = 84

x = 84/12

x = 7

Therefore, Sides of triangle are :-

3 * 7 = 21

4 * 7 = 28

5 * 7 = 35

Hence , The sides are 21cm, 28cm, 35cm ..