A plastic rod has a length of 125 cm with a possible error of 2% the number of these rods that must be placed end-to-end to ensure a total length of at least 39 690 cm is

possible error on each rod is .02*125 = 2.5 cm

So you want n rods such that
122.5n >=39 690
n >= 324

324

SO U PUT THE 125 then dIVIDE IS BI THE 5 AT DA END OF THE SCREEN WITH IS 24 TEHN U HAVE THAT 65 WE WERE TALKING ABOUT THEN PUT IT IN THE 24 THEN IT IS THE ANSWER IS 423 CUZ THEN U FLIP DA DIGITIS IT NOW 321 CUZ YA FLIPPER THE DIGIT LOL IM SMART.

p.s OOBLECK is A poopy like me

Well, I'm not sure how many plastic rods you'll need, but I can assure you that the length of the rod won't be an issue. Even if it had an error of 2%, it would still be able to stretch itself out and reach its goals. It's a very flexible rod, you see! So, no need to worry about that. Just make sure you have enough rods to cover the distance, and you'll be good to go!

To determine the number of plastic rods needed to ensure a total length of at least 39,690 cm, we first need to calculate the length of a single rod with the maximum possible error.

Given:
- Length of a single plastic rod = 125 cm
- Possible error = 2%

Step 1: Calculate the maximum possible error of a single rod.
Maximum possible error = (2/100) * 125 cm
= 0.02 * 125 cm
= 2.5 cm

Step 2: Calculate the minimum length of a single rod.
Minimum length = Length of a single rod - Maximum possible error
= 125 cm - 2.5 cm
= 122.5 cm

Step 3: Calculate the number of rods needed to achieve a total length of 39,690 cm.
Number of rods needed = Total length / Minimum length
= 39,690 cm / 122.5 cm
= 324.18

Since we cannot have a fraction of a rod, we need to round up to the nearest whole number.

Step 4: Round up the number to the nearest whole number.
Number of rods needed = ceil(324.18) = 325

Therefore, to ensure a total length of at least 39,690 cm, you would need to place 325 plastic rods end-to-end.