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Lady bird [3.3K]
3 years ago
9

Most hard drives are divided into sectors of 512 bytes each. Our disk has a size of 16 GB. Fill in the blank to calculate how ma

ny sectors the disk has. Note: Your result should be in the format of just a number, not a sentence.
disk_size = 16*1024*1024*1024
sector_size = 512
sector_amount =
print(sector_amount)
Computers and Technology
1 answer:
nika2105 [10]3 years ago
4 0
The answer is pretty simple to achieve for this question. Multiply the disk size and then divide by the sector size - this will result in the total number of sectors. The reason the disk size shows “16*1024*1024*1024” is because there are 1024 bytes (B) in one kilobyte (1KB), and 1024KB in one megabyte (1MB), and 1024MB in one gigabyte (1GB). So, once you find out how many total bytes you have and then divide the total number of bytes by sector size (512), you will arrive at the answer.
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<h2>Question</h2>

Which of the following class definition defines a legal abstract class Group of answer choices

(a)

public class Rectangle abstract {

   public abstract double findArea ( );

   

}

(b)

public abstract class Rectangle {

   public abstract double findArea ( );

   

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(c)

public class Rectangle {

   public abstract double findArea ( );

   

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(d)

public class abstract Rectangle {

   public abstract double findArea ( );

   

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<h2>Answer:</h2>

(b)

public abstract class Rectangle {

   public abstract double findArea ( );

}

<h2>Explanation:</h2>

When a class is declared with the abstract keyword, the class is called an abstract class. Abstract classes cannot be instantiated and may include one or more abstract methods. If a class contains an abstract method, then it (the class) must be declared abstract.

In Java, abstract classes are defined using the following format:

<em>[access_modifier]</em> abstract class <em>[name_of_class]</em>

[access_modifier] specifies the access modifier of the class which could be public, private, e.t.c

abstract is the keyword that specifies that the class is an abstract class.

class is a keyword used for defining classes

name_of_class specifies the name of the class.

The only option that fulfils this format is <em>option b</em> where;

(i) The access modifier is public

(ii) The name of the class is Rectangle

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Option d is not correct because the <em>abstract</em> keyword is supposed to come before the <em>class</em> keyword.

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