Pls answer. pls give step-by-step explanation.
2 answers:
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Answer:
Total walk she did around the pool every morning = 141.3
Step-by-step explanation:
Given - Kriti has a circular swimming pool in her house. The radius of the swimming pool is 22.5 cm. She walks one round every morning before diving in the pool.
To find - How far does she walk around the pool every morning?
Proof -
Given that, the swimming pool is circular in shape.
So,
1 round of circle = Circumference of circle.
As we know that,
Circumference =
=
= 141.3
∴ we get
Total walk she did around the pool every morning = 141.3
Answer:
16.67% probability of getting 2 blues
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
The order in which the marbles are selected is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
What is the probability of getting 2 blues?
Desired outcomes:
Two blue marbles, from a set of 4.
Total outcomes:
Two marbles, from a set of 9.
Probability:
16.67% probability of getting 2 blues