# NCERT Solutions for Class 6 Maths Chapter 10 Exercise 10.1

NCERT Solutions for Class 6 Maths Chapter 10 Exercise 10.1 (Ex. 10.1) Mensuration updated for academic session 2021-2022 free to use online or download in PDF. All the study material given on Tiwari Academy is free to use without any formal registration.

In class 6 math exercise 10.1, we will study about the areas of rectangle, square, triangles and practical problems based on these two dimensional figures. Videos and PDF both type of solutions are available on website for free.## Class 6 Maths Chapter 10 Exercise 10.1 Solution

### CBSE NCERT Class 6 Maths Chapter 10 Exercise 10.1 Solution in Hindi and English Medium

Class: 6 | Mathematics |

Chapter: 10 | Mensuration |

Exercise: 10.1 | Hindi and English Medium Solutions |

### Class 6 Maths Chapter 10 Exercise 10.1 Solution in Video

#### Simple Closed Curve

A curve or a figure having the same beginning and ending point is called a closed curve. For examples, a triangle, a square, or any close curved shape.

#### Perimeter of a Figure

The Greek word “peri” means ‘around’ and “meter” means ‘measure’. So, perimeter means measuring around a figure or a curve.

The distance around a figure or the length of the boundary of a figure, is called the perimeter of the figure.

Example:

A rectangular shape, if we start from A, move along AB, then BC, then CD and then DA, we reach back at the starting point A. Only in the case of a simple closed figure, it is possible.

The perimeter of this figure is AB + BC + CD + DA

= 7 cm + 4 cm + 5 cm + 3 cm = 19 cm.

#### Perimeter of a Rectangle

A rectangle which sides are of length 8 cm and breadth 6 cm. If we go round it once, the distance covered will be 8 cm + 6 cm + 8 cm + 6 cm = 28 cm.

Sum of the four sides of a rectangle is called the perimeter of the rectangle.

If we denote the length and breadth of the rectangle by l and b respectively,

Then Perimeter of the rectangle = l + b + l + b = 2l + 2b = 2 (l + b).

The perimeter P of a rectangle whose length and breadth are l and b respectively is given by P = 2 (l + b).

Perimeter = 2 (length + breadth)

Note: The unit of the perimeter is the same as that of the length and the breadth.

###### If the perimeter P of a rectangle and one of length (l) or breadth (b) are known, we can find the other as follows:

Length = ½ Perimeter – Breadth

and Breadth = ½ Perimeter – Length

### Class 6 Maths Exercise 10.1 Important Questions

##### A rectangular field is 45 m long and 32 m wide. Find its perimeter.

Length of the field = 45 m Breadth of the field = 32 m

So, Perimeter of the field = 2 (length + breadth)

= 2 (45 + 32) m = 2 × 77 m = 154 m.

##### How to find the perimeter of a rectangle?

To get the perimeter of a rectangle, add all the sides of it. There are 4 sides of a rectangle whose sum will give its perimeter.

##### What is the formula for the perimeter of a rectangle?

The formula for the perimeter of a rectangle is, P = length + breadth + length + breadth.

Or, P = 2(length + breadth)

##### What is the formula for area of rectangle?

The formula for area of rectangle is:

Area = Length x Breadth