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# CBSE Class 7 Maths Chapter 11 Perimeter and Area Revision Notes

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## CBSE Class 7 Maths Chapter 11 Perimeter and Area Revision Notes

If you are looking forward to scoring excellent marks in your Class 7 Maths Exams then it becomes very significant to understand the importance of Revision. Revision is very important as it helps you remember all the important chapters and co-related concepts that you have learned earlier and for the purpose of Revision, Revision Notes are always considered the best as they make your learning easy and convenient.

Chapter 11 of CBSE Class 7 Maths is Perimeter and Area. Swiflearn offers the best and most reliable CBSE Class 7 Maths Chapter 11 Perimeter and Area Revision Notes that will make students understand all the important topics & concepts of this chapter and will help them in higher studies also. Free CBSE Class 7 Maths Chapter 11 Revision Notes provided here are prepared under the auspices of our Excellent Teachers keeping in mind the latest CBSE guidelines.

CBSE Class 7 Maths Chapter 11 Perimeter and Area Revision Notes are one of the most important pieces of study material that students can use as it will make their learning convenient and will also save them a lot of time. Students can download CBSE Class 7 Maths Chapter 11 Revision Notes in PDF format, use them to revise all their previously learned concepts, and hence score better in their exams.

## Perimeter and area

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‌Perimeter

Perimeter is the total length or outer distance covered along the boundary of a closed shape.

Area

The area is the total surface enclosed by a closed figure.

Perimeter and Area of Square

Perimeter of a square = 4a

Area of square = 4a2

Where, ‘a’ is the length of each side.

Perimeter and Area of Rectangle

Perimeter of a rectangle = 2(l + b)

Area of rectangle = l × b

Where, l and b represents length and breadth, respectively.

Area of a Parallelogram

Area of parallelogram = base × height

Triangle as Part of Rectangle

In the given figure, Area of each triangle = 1/2 (Area of the rectangle)

#### Circles

It is a simple closed curve.

Circumference

It is a total path or total distance covered by the circle.

Circumference of a circle = 2×π×r

Area of a circle = π×r2,

Conversion of Units

1cm   = 10 mm

1m    =   100 cm

1km =    1000m