Respuesta :

georgiatrn
70×40=2800cm which is the total amount of cm that the teacher needs

10m = 1000cm 

[tex] \frac{2800}{1000} [/tex] = 2.8

there will be 3 balls of string
70×40=2800 cm, which would be the total amount of cm that the teacher needs for the balls.

10m = 1000cm 

 = 2.8

There will be 3 balls of string.