Question

how does 150cm^2 = 23.2in^2

Answer 1

1inch = 2.54cm
1cm=1/2.54
1cm^2=1/(2.54*2.54)
150cm^2=150*1/(2.54*2.54)
150cm^2=23.2in^2

Answer 2

in^2 = 150 cm^2 * (1 in)^2/ (2.54cm)^2
= 23.25 in^2