The surface of a circle is calculated with the formule r^2 x pi. That gives you 3^2 x pi = 9 x pi = 28,274333...
Yes because if you are asking every 4th kid then you are have a chance of one of of four
Yes it would be as long as two sides of a triangle are congruent then it’s fine
2
Because -
2 x 12=12
2 x 13 = 36
2 x 42 = 84
Rounding is based on if the number is greater than 5, if it is indeed greater than 5 it precedes to a higher number.
For instances, 37 rounds up to 40 or with smaller numbers 5 rounds to 10.
To address this question, <em>30 does not round up nor down, </em>it remains as 30 because the ones place is less than 5.
To summarize
- Round up when the ones place is 5 or higher
- Do not round if it is lower than 5
- Ex: 37 --> 40
- Ex: 22 --> 22