i wanna answer 1st question.I hope it will be helpful
so what you can do is to do substract of circumference of circle by the rectangle
and you will area value of circle
Answer:
Step-by-step explanation:
4
4%
The probability that two smoke is the product of the probabilities that each smokes, provided the students are selected independently.
... 0.20 × 0.20 = 0.0400 = 4%