Introduction

Mensuration is a branch of mathematics which mainly deals with the study of different kinds of Geometrical shapes along with its area, length, volume and perimeters.

Area

The surface covered by the border line of the figure is the area of the plain shape.

Unit of the area is square of the length unit.

Perimeter

The perimeter is the length of the boundary of the plane shape.

The unit of the perimeter is same as the length unit.

ShapeImageArea Perimeter 
SquareThis image has an empty alt attribute; its file name is image-102.png(Side)24 × Side
RectangleThis image has an empty alt attribute; its file name is image-103.pngLength × Breadth2(Length + Breadth)
TriangleThis image has an empty alt attribute; its file name is image-104.png(1/2) × Base × Height
where, a, b and c are the three sides of the triangle)
a + b + c
ParallelogramThis image has an empty alt attribute; its file name is image-105.pngBase × Height2(sum of adjacent sides)
CircleThis image has an empty alt attribute; its file name is image-106.png\pi r^2 2\pi r
Where, r = radius of the circle
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