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Answer:
75% of the students at the Moore school are are learning to play a stringed instrument.
Step-by-step explanation:
We are given the following in the question:
Total number of students at Moore school = 360
Number of students learning stringed instrument = 270
We have to find the percentage of the students who are learning to play a stringed instrument.
Percentage =
Thus, 75% of the students at the Moore school are are learning to play a stringed instrument.
Using the surface area of the sphere, it is found that the radius of the bearing that Helen needs to buy is of 6 millimeters.
<h3>What is the surface area of a sphere?</h3>The surface area of a sphere of radius r is given by:
In this problem, we have that:
Hence:
r = 6.
The radius of the bearing that Helen needs to buy is of 6 millimeters.
More can be learned about the surface area of a sphere at brainly.com/question/21207980
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