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E:\Working\Focus_Learning\Math_Genius_4_(25-10-2023)\Open_Files\Chap-11
\\December 6, 2023 1:01 PM 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
Mathematics-4 203

