you complete 3 cm of a necklace in1 hour. Each hour after the first hour you triple the length of the necklace. What is the length of the necklace after 3 hours?

End of hour 2 = 9 cm

End of hour 3 = 27 cm.

27+9=36 cm.

To find the length of the necklace after 3 hours, let's break down the problem step by step:

Step 1: Calculate the length of the necklace after the first hour.
Given that you complete 3 cm of the necklace in one hour, the initial length of the necklace is 3 cm.

Step 2: Calculate the length of the necklace after the second hour.
In the second hour, you triple the length of the necklace. Thus, the length becomes 3 cm * 3 = 9 cm.

Step 3: Calculate the length of the necklace after the third hour.
Similar to the second hour, you triple the length of the necklace. Hence, the length becomes 9 cm * 3 = 27 cm.

Therefore, the length of the necklace after 3 hours is 27 cm.