First you need to work out how much string is needed -
256 pieces needed x 40cm each:
256 x 40 = 10240cm

Then, convert to metres (100cm = 1m)
10240 / 100 = 102.4m

Then, you work out how many balls are needed:
30 can fit into 102.4 3 times with .41m to spare. So, you need three balls of string, PLUS another one to cover the 41cm

So to conclude: 4 balls of string are needed.

4 0

3 years ago

Is 40 a multiple or a factor

gladu [14]

Hey there!
It can be both. It's a multiple of 8 because 8 times 5 is 40, but it's also a factor of 120 because 80 times 3 is 120.
Hope this helps!

5 0

3 years ago

SimplifyLaTeX: \dfrac{\cos^2\alpha}{1-\sin\alpha}-1

Troyanec [42]

Could u clarify the question more Please

3 0

3 years ago