Find the area of each shaded section. Each block is 1 square unit (u).
Problem 1 :
Solution :
Total number
of complete squares = 40
= 40 × 1
Area of compete squares = 40
Total number of half squares = 9
= 9 × 0.5
Area of half squares = 4.5
Area of shaded section = 40 + 4.5
= 45 units^{2}
So, area of shaded shape is 45 units^{2}.
Problem 2 :
Solution :
By observing the figure,
Total number of complete squares = 34
= 34 × 1
Area of complete squares = 34
Total number of half squares = 16
= 16 × 0.5
Are of half squares = 8
Area of shaded section = 34 + 8
= 42 units^{2}
So, area of shaded section is 42 units^{2}.
Problem 3 :
Solution :
Total number
of complete squares = 8
= 8 × 1
Area of complete squares = 8
Total number of half squares = 4
= 4 × 0.5
Area of half squares = 2
Area of shaded section = 8 + 2
= 10 units^{2}
So, area of shaded section is 10 units^{2}.
Problem 4 :
Solution :
Total number
of complete squares = 42
= 42 × 1
= 42
Total number of half squares = 14
= 14 × 0.5
= 7
Area of shaded section = 42 + 7
= 49 units^{2}
So, area of shaded section is 49 units^{2}.
Problem 5 :
Solution :
Total number
of complete squares = 29
= 29 × 1
= 29
Total number of half squares = 12
= 12 × 0.5
= 6
Area of shaded section = 29 + 6
= 35 units^{2}
So, area of shaded section is 35 units^{2}.
Problem 6 :
Solution :
Total number
of complete squares = 44
= 44 × 1
= 44 units
Total number of half squares = 8
= 8 × 0.5
= 4 units
Area of shaded section = 44 + 4
= 48 units^{2}
So, area of shaded section is 48 units^{2}.
Problem 7 :
Solution :
By observing the figure,
Total number of complete squares = 44
= 44 × 1
= 44 units
Total number of half squares = 4
= 4 × 0.5
= 2 units
Area of shaded section = 44 + 2
= 46 units^{2}
So, Area of shaded section is 46 units^{2}.
Problem 8 :
Solution :
Total number
of complete squares = 21
= 21 × 1
= 21
Total number of half squares = 6
= 6 × 0.5
= 3
Area of shaded section = 21 + 3
= 24 units^{2}
So, area of shaded section is 24 units^{2}.
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