Question

the perimeter of this shape is 39cm .work out the length x​

Answer 1

Answer:

your answer is 3 cm

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Answer 2

Answer:

3 cm

Step-by-step explanation:

You: Why is it 3 cm?

Here it is:

1st Step-

First add all the sides given. That is:

7 cm+9 cm+8 cm+ 12 cm= 36 cm

You: Then what should we do?

2nd Step-

39 cm - ? cm = 36 cm

For this 39-36 will work and therefore answer is 3 cm..

Extra:

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