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10 Mensuration

Learning Objectives
After studying this chapter, students will be able to... Scan to learn

( calculate the perimeter and area of basic geometrical figures using their respective formulae
( determine the perimeter and area of combinations of two or more geometrical figures
( find the area of a trapezium and general quadrilaterals, including rhombus
( find the area of various polygons, like fields or plots of land
( find the surface area of solid shapes (cube, cuboid, and cylinder)
( find the volume and capacity of solid shapes (cube, cuboid, and cylinder)

get ready!

Raman and his father visited their ancestral agricultural field when it was being ploughed. His father was
trying to calculate the area of the field with the help of a map.
I will pay as per the
area ploughed. I am
Papa! How much will
we need to pay for trying to calculate the
ploughing this field? area of this field using
the map in my hand.

How will you calculate
the area of this shape? It has an irregular shape.
To find the area of this
land, we must divide it
into parts in the form of
basic rectilinear figures.

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