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E:\Working\Brother_Education\Preparatory_Stage_Maths-4\Open_Files\Chap-11
\\October 31, 2023 10:13 AM Bharat Arora P-6 Reader _________________________ Date: ___________________74

activity
Use the square grid to draw two plane figures with a perimeter of 12 cm
but with different areas.

finding area using geo Dotted Paper

We can also find the area of a plane figure using geo dotted paper.

Each unit on the geo dotted paper measures 1 cm.

So, each square on it has side of 1 cm and has an area of 1 sq. cm.

example: Find the area of the following plane figures drawn on a dot grid in sq. cm
by counting number of squares in the interior of each.

(a) (b) (c)

Solution: (a) Area = 9 sq. cm (b) Area = 7 sq. cm (c) Area = 11 sq. cm

Practice time 11B

1. Find the area of each figure drawn on a square grid by counting number of
squares covered by the shape (each square = 1 sq. cm).

1 cm
1 cm

d
F

A C

B e g

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