Question
Some shapes are given on the grid paper below. Find their area.
✓
Answer
The figure shows a rectangle. If each side of the square on the grid paper measures 1 cm, then the length of the rectangle = 5 cm and the width = 2 cm The number of squares enclosed by rectangle ABCD = 10
Therefore, the area of the rectangle = 10 square cm.
Here, a rule is also visible between the length, width and area of the rectangle.
Length x Width = Area
= 5 cm x 2 cm
= 10 square cm.
(ii) Length of the square = 4 cm
Breadth of the square = 4 cm
Area of the square = $(\text { side })^2$
$=(4)^2$
= 16 square cm
Number of squares enclosed within square ABCD = 16
Therefore, area of the square = 16 square cm
(iii) Length of the rectangle = 7 cm
Breadth of the rectangle = 3 cm
Area of the rectangle = length × breadth
= 7 cm x 3 cm
= 21 square cm
Number of squares enclosed within rectangle ABCD = 21
Therefore, area = 21 square cm
Therefore, the area of the rectangle = 10 square cm.
Here, a rule is also visible between the length, width and area of the rectangle.
Length x Width = Area
= 5 cm x 2 cm
= 10 square cm.
(ii) Length of the square = 4 cm
Breadth of the square = 4 cm
Area of the square = $(\text { side })^2$
$=(4)^2$
= 16 square cm
Number of squares enclosed within square ABCD = 16
Therefore, area of the square = 16 square cm
(iii) Length of the rectangle = 7 cm
Breadth of the rectangle = 3 cm
Area of the rectangle = length × breadth
= 7 cm x 3 cm
= 21 square cm
Number of squares enclosed within rectangle ABCD = 21
Therefore, area = 21 square cm
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