Question: The percentage opening is calculated using the formula ___________

Options

A : (Area of the wall where there is no opening/ Area of opening) x 100

B : (Area of opening / Area of the wall where there is no opening) x 100

C : (Area of the total wall / Area of the wall where there is no opening) x 100

D : (Area of the total wall / Area of opening) x 100

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