Q2 of 18 Page 210

The area of A0 paper is one square metre. Calculate the lengths of the sides of A4 paper correct to a millimetre, using a calculator.

Given:


Area of A0 paper = 1m2


Area of A1 paper = half of 1


Area of A2 paper = half of


Area of A3 paper = half of


Area of A2 paper = half of


Now we calculate the sides of A4 sizes:


Let the length be l and width be w


Area = Length × width


⇒


We know that, l = √2 × w


⇒


⇒


⇒


⇒ w2 = 0.04419


⇒ w = √0.04419


⇒ w = 0.2102 m


⇒ w = 210.2 mm


So, length = √2 × 210.2 mm


= 1.414 × 210.2


= 297.3 mm


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