Answer
Verified
439.8k+ views
Hint: To find the perimeter of the object we will add all the length of all sides of the given figure. If we do not have a particular side then we will find it with the help of the figure. Hence we will get the perimeter that is the length of the border of the figure.
Complete step-by-step solution:
Now let us see what does perimeter means.
The perimeter is defined on 2-D objects.
Now 2-D objects mean 2-dimensional objects.
A two-dimensional object is an object which has only two measures that is length and width and no thickness.
For example a square, a rectangle.
Now we also have something called 3-D objects.
Objects that we see around us are 3-dimensional objects.
It has length, width as well as thickness.
Now let us see some examples of 3-dimensional objects
cube, sphere, cuboid, pyramid, etc.
Now the perimeter is defined only for 2 Dimensional objects.
Perimeter means the length around the objects. Hence perimeter is nothing but the measure of the border of an object.
For example, let us consider a triangle with each side 5 cm
Now here the perimeter of triangle will be the length of the border
Hence perimeter $= 5 + 5 + 5= 15cm$
Hence perimeter of the square is 15 cm.
Now consider the given figure.
Now we know that perimeter of this figure is $AB + BC + CD + DE + EF + FA.$
From the figure we have $AB = 7, BC = 1, CD = 3, DE = 2.5, EF = 3.$
Now from the figure, we can say that $AF = DE + BC$
Hence $AF = 2.5 + 1 = 3.5.$
Now again consider the perimeter $AB + BC + CD + DE + EF + FA.$
Substituting the values we get perimeter as
$= 7 + 1 + 3 + 2.5 + 3 + 3.5$
$= 14 + 2.5 + 3.5 $
$= 14 + 6 $
$= 20cm$
Hence the perimeter of the given figure is 20cm.
Note: Now note that the difference between area and perimeter. Perimeter is the total length of the border while the area is a total measure of the object. Now both quantities are measures of 2-dimensional objects. The unit for Area is \[c{{m}^{2}}\] or ${{m}^{2}}$ while the unit of perimeter is cm or m.
Complete step-by-step solution:
Now let us see what does perimeter means.
The perimeter is defined on 2-D objects.
Now 2-D objects mean 2-dimensional objects.
A two-dimensional object is an object which has only two measures that is length and width and no thickness.
For example a square, a rectangle.
Now we also have something called 3-D objects.
Objects that we see around us are 3-dimensional objects.
It has length, width as well as thickness.
Now let us see some examples of 3-dimensional objects
cube, sphere, cuboid, pyramid, etc.
Now the perimeter is defined only for 2 Dimensional objects.
Perimeter means the length around the objects. Hence perimeter is nothing but the measure of the border of an object.
For example, let us consider a triangle with each side 5 cm
Now here the perimeter of triangle will be the length of the border
Hence perimeter $= 5 + 5 + 5= 15cm$
Hence perimeter of the square is 15 cm.
Now consider the given figure.
Now we know that perimeter of this figure is $AB + BC + CD + DE + EF + FA.$
From the figure we have $AB = 7, BC = 1, CD = 3, DE = 2.5, EF = 3.$
Now from the figure, we can say that $AF = DE + BC$
Hence $AF = 2.5 + 1 = 3.5.$
Now again consider the perimeter $AB + BC + CD + DE + EF + FA.$
Substituting the values we get perimeter as
$= 7 + 1 + 3 + 2.5 + 3 + 3.5$
$= 14 + 2.5 + 3.5 $
$= 14 + 6 $
$= 20cm$
Hence the perimeter of the given figure is 20cm.
Note: Now note that the difference between area and perimeter. Perimeter is the total length of the border while the area is a total measure of the object. Now both quantities are measures of 2-dimensional objects. The unit for Area is \[c{{m}^{2}}\] or ${{m}^{2}}$ while the unit of perimeter is cm or m.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Which are the Top 10 Largest Countries of the World?
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Difference Between Plant Cell and Animal Cell
Give 10 examples for herbs , shrubs , climbers , creepers
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
How do you graph the function fx 4x class 9 maths CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE