数学における幅とは？定義、公式、例、事実

What Is Width in Math? Definition, Formula, Examples, Fact Parents Explore by Grade Preschool (Age 2-5) Kindergarten Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Explore by Subject Math Program English Program More Programs Homeschool Program Summer Program Monthly Mash-up Helpful Links Parenting Blog Success Stories Support Also available on Educators Teach with Us For Teachers For Schools and Districts Data Protection Addendum Impact Success Stories Resources Lesson Plans Classroom Tools Teacher Blog Help & Support More Programs SpringBoard Summer Learning Our Library All By Grade Preschool Kindergarten Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 By Subject Math English By Topic Counting Addition Subtraction Multiplication Phonics Alphabet Vowels One stop for learning fun! Games, activities, lessons - it's all here! 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Width Definition Difference between Width and Depth Solved Examples Practice Problems Frequently Asked Questions What Is Width in Math? All the living and nonliving things around us are of different shapes and sizes. We can describe their size in various ways. One of them is by measuring their width. What does width mean in geometry? The measure of an object from side to side is known as width in math. The given image shows us the width of a swimming pool. Width Definition Width can be defined as the horizontal measurement or distance measured from side to side. Which way is width measured? It is measured at right angles to the length. Width measures an object from one side to another. For example, we tell how wide a road is by measuring the distance from one side of the road to the other. Difference between Width and Length “Width” in geometry is often used to describe the shorter side of objects. For example, in the given rectangles, both are the same rectangle, but one is rotated just to show that the shorter side of the rectangle is called the width. The term “length” is often used alongside width in geometry to describe the longer of the lengths in an object. Let us understand width better with an everyday example. Look at the image of a door, the shorter measurement of the door is its width. It is indicated by the double arrow and is also the measure of the door from side to side. Width can be measured in standard units like meter, centimeter, millimeter. Other customary units are inch, yard, foot. Difference between Width and Depth Is width the same as depth? What is the difference between these measurements? Let’s see. In two-dimensional shapes, width is the shortest side and tells us how broad an object is. Some objects around you, which have width, are book, wall, door, black board, desk, etc. Depth is used to tell us how deep a three-dimensional object is. It is the side perpendicular to length and width. We use the word depth when we talk about objects that are under the ground. Some things that have depth include well, pit, lake etc,. Width of Different Two-dimensional Shapes In two-dimensional shapes, the width is the shortest side. Let us now see how we represent width in different two-dimensional mathematical shapes. Width of certain shapes are referred to with special names, for example, width of a rectangle is also known as its breadth. In the case of a square, either of the sides can be width since all the sides of a square are equal. Width of Different Three-dimensional Shapes In three-dimensional shapes, the shortest measure need not be the width. The side that represents width depends on the orientation of the shape. Let us see the width of three-dimensional shapes. Conclusion If you are tired of trying out dresses to see if they are your size, you can measure your body width and the width of your dress to check if they fit you. Solved Examples Which eraser has the maximum width? Solution: Width is the side to side measure of an object. By counting the squares we can see that eraser A and B are less than 2 centimeters wide and eraser C is more than 2 centimeters wide. Therefore, eraser C has the maximum width. 2. What is the width of the given rectangle? Solution: The shorter side of the rectangle is the width. Therefore, the width of the rectangle is 5 cm. 3. What is the width of the given rectangle? Solution: By counting the squares along the width, we get the width of the rectangle as 2 units. 4. Which rectangle has the shortest width? Solution: The shortest side of the rectangle is known as the length. By counting the squares, we can see that rectangle A has the least measurement of the shortest side. Hence, rectangle A has the shortest width. 5. Give the width of the cuboid shown. Solution: The width of the cuboid is 1 cm. Practice Problems Width - Definition with Examples Attend this quiz & Test your knowledge. 1 Look at the image of the pool table, what is its width? 3 cm 1.5 cm 3 m 1.5 m Correct Incorrect Correct answer is: 1.5 m The width of the pool table is 1.5 m. 2 Which rectangle has the greatest width? A B C Both A and C Correct Incorrect Correct answer is: B Rectangle B has the greatest width of 2 units. 3 What is the width of the given rectangle? 5 cm 4 cm 3 cm 2 cm Correct Incorrect Correct answer is: 4 cm Width of the rectangle is its shortest side, i.e., 4 cm. 4 Give the width of the cuboid shown. 6 cm 2 cm 1 cm 9 cm Correct Incorrect Correct answer is: 2 cm Width of the cuboid is 2 cm. 5 The _________ is the shortest side of a rectangle. length height depth width Correct Incorrect Correct answer is: width The shortest side of any two-dimensional shape is known as its width, so the width is also the shortest side of the rectangle. Frequently Asked Questions Can the width measurement be in decimals or fractions? Yes, width measurement can be in decimals or fractions. It is the side to side distance of an object. C