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Grade 8 Number & Operations
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Ratios, Proportions & Percents -Formulas to Solve Equations
Question: Find the area of the square.
A )
15
2
square cm
B )
25
4
square cm
C )
23
4
square cm
D )
27
4
square cm
Steps to derive
1
Area of the square = side x side
[Substitute the length of the side.]
2
=
2
1
2
x
2
1
2
[Convert mixed number to improper fraction.]
3
=
5
2
x
5
2
[Multiply the numerators and the denominators.]
4
=
(5x5)
(2x2)
5
=
25
4
6
So, the area of the square is
25
4
square cm.
Hence the right answer is Option B
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