How many square inches in a3 size?

Answer 1

A3 is approx 193.75 in2

The A series of paper is designed so that A(n+1) is half the area of An and A0 is 1m2.

⇒ A3 is half A2 is half A1 is half A0

⇒ A3 is 1/8m2 = 0.125m2

1m = 100cm

1m2 = 1m x 1m

= 100cm x 100cm

= 10000cm2

1in =2.54cm (exactly)

1in2 = 1in x 1in

= 2.54cm x 2.54cm

= 6.4516cm2

⇒ A3 = 0.125m2

= 1250cm2

= 1250 ÷ 6.4516 in2

~= 193.75 in2