The denominator would still be the same you placed the marble back into the bag
Answer:
Option (2). 14 m
Step-by-step explanation:
Formula to get the area of a circle 'A' = 
where r = radius of the circle
Given in the question,
Area of the circle = 153.86 square meters
By putting the values in the formula,
153.86 = πr²
r = 
r = 
r = 7 meters
Diameter of circle = 2 × (radius of the circle)
= 2 × 7
= 14 meters
Therefore, diameter of the circle is 14 meters.
Option (2) is the answer.
Answer:
Probability of selecting one volcano in the world on which to conduct an extensive study is given by

Step-by-step explanation:
Since we have given that
Number of cinder cone volcanoes = 13
Number of shield volcanoes = 18
Number of strato volcanoes = 6
Total number of volcanoes is given by

So, Probability of getting one volcano in the world on which to conduct an extensive study is given by

Hence, Probability of selecting one volcano in the world on which to conduct an extensive study is given by
