Respuesta :

oscar236

Answer:

3 metres.

Step-by-step explanation:

The circumference of the reel is pi * d = 3 * 5  = 15 cm.

So the length of the thread = 200 * 15

= 3000 cm

= 30 metres.

ricchad

Answer:

L = 30 m

Step-by-step explanation:

lets make it simple and accurate

given

reel dia = 5 cm = 0.05 m

200 times round the reel

π = 3

reel O circumference = π d

Length of thread = Number of times round the reel x circumference

therefore,

L = 200 x (3 * 0.05)

L = 30 m

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