(30 points!)

Mathematics

1 answer:

Vera_Pavlovna [14]3 years ago

8 0

Answer:

The lengths of the sides are 12cm, 28cm and 36cm.

Step-by-step explanation:

Let the smallest side be 4x, the middle side be 7x and the largest side be 9x.

Smallest side + middle side + largest side = 60cm

4x + 7x + 9x = 60

20x = 60

x = 60 ÷ 20

x = 3

Smallest side (4x) = 3 × 4

= 12

Middle side (7x) = 7 × 4

= 28

Largest side (9x) = 9 × 4

= 36

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