NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area: Perimeter is the distance around a closed figure and area is the space occupied by a close figure. If we have to determine the length of the frame required to cover drawing in the shape of a rectangle of given length and breadth we will calculate the perimeter of the picture, that is Perimeter= 2(length + breadth). In the practical case, we will buy slightly higher than the required dimension since there may be cuts and joints requires for the frame. But if a question is asked we will calculate the perimeter.
In these NCERT Solutions for Class 7 Maths Chapter 11, we will study about the perimeters of rectangle triangle, parallelogram, and circles. To calculate the required amount of sheet to cover a rectangular window we will consider the area of the window. If the length of the window is l and breadth is b then area of the sheet required= area of window=lb. In NCERT Solutions for Class 7 Maths, we will also study the area of rectangle, triangle, parallelogram, and circles. While doing the problems of NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area be careful about units are given. Convert all the given values to a common unit and do the problems.
The concept of Area of a triangle is given in NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and area:
Area of a triangle: if the base length and height of a triangle are known is given by
The perimeter of the triangle will be equal to the sum the sides of the triangle
Q) Calculate the area and perimeter of a triangle with base length =6cm and height = 4cm as shown in the below figure.
Perimeter = sum of the sides = 5+6+5=16 cm
Circumference and Area of Circles is also mentioned in NCERT Solutions for Grade 7 Maths Chapter 11
If r is the radius of the circle then
Q) Calculate the area and circumference of a protractor of diameter 7 cm as shown in figure
The radius of the protractor is half of its diameter = 3.5 cm
Circumference = Circumference of semicircular part + diameter
Another concept mentioned in the NCERT Solutions for Class 7 Maths Chapter 11 is Area of Parallelogram
Area of a parallelogram: is the product of base length and height. For a parallelogram with base length b and height h
area=bh
The main topics of the NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area are:
11.1 Introduction
11.2 Squares And Rectangles
11.2.1 Triangles As Parts Of Rectangles
11.2.2 Generalising For Other Congruent Parts Of Rectangles
11.3 Area Of A Parallelogram
11.4 Area Of A Triangle
11.5 Circles
11.5.1 Circumference Of A Circle
11.5.2 Area Of Circle
11.6 Conversion Of Units
11.7 Applications
NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area Exercise 11.1
NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area Exercise 11.2
NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area Exercise 11.3
NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area Exercise 11.4
NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area InText Solutions
Chapter No. 
Chapter Name 
Chapter 1 

Chapter 2 

Chapter 3 

Chapter 4 

Chapter 5 

Chapter 6 

Chapter 7 

Chapter 8 

Chapter 9 

Chapter 10 

Chapter 12 

Chapter 13 

Chapter 14 
Q. 17. The minute hand of a circular clock is long. How far does the tip of the minute hand move in hour. (Take)
Q. 6. Saima wants to put a lace on the edge of a circular table cover of diameter . Find the length of the lace required and also find its cost if one meter of the lace costs (Take )
Q. 2. Find the area of the following circles, given that:
(a) (Take )