pi*pi = 9.8696044010893586
You could round it to the nearest hundreths and get 9.87
pi=3.1415926535897932384
Use a front slash /
examle:4/5
-6*.5 = -3
-3 is your answer
72/9 is 72 divided by 9. 72/9=8
8+7=15
Hope this answers your question
To write a fraction on the computer or other devices use a slash like this--> /
Example: 8/9
5 bracelets because 4 hours is 240 min.
240-45=195 =1 bracelet
195 -45= 150= 2nd bracelet
150-45=105=3rd bracelet
105-45=60=4th bracelet
60-45=15=5th bracelet
They can't make another bracelet because it takes 45 min and they only have 15 min left.
Yes, 1/21
DIvide both numbers by 4 and get 9/189 then divide both by 9 and get 1/21.
(Note: You can divide differently but the simplest form is 1/21)