Answer:
radius = 21
circumference = 138.88
Step-by-step explanation:
First divide the area by 3.14, this equal 441
441 is your radius squared.
Then you have to find the root of 441 which is 21.
radius = 21
diameter = twice the radius or 2 * radius
diameter = 21 * 2 = 42
diameter = 42
Then plug 42 in your circumference formula.
Which is then C = 3.14(42).
Which means the circumference is 131.88.
Not sure why it needs to be a fraction, if I am missing something please tell me. 64 or 64/1
Answer:
1) 75 minutes / 1hour 15minutes
Step-by-step explanation:
to get one question done takes (45 ÷ 12) minutes. then times by 20.
Answer
2) I'm not too sure, I got 208.3 reoccurring, but that doesn't seem right so sorry if it's wrong
Answer
3)168 girls
step-by-step explanation
364 ÷ (6+7) × 6
6/35 is your answer answer answer sorry
Answer:
z-score = 2.
Step-by-step explanation:
The z-score = (x - m) / d where x =the person's score, m = the mean and d = the standard deviation.
So we have (87-67)/10
= 2.
