Question

20 cm^2 is equal to [ ]
a) 20 × 10^–2 m^2
b) 20 × 10^–4 m^2
c) 20 × 10^–1 m^2
d) 20 × 10^2 m^2

Answer 1

b) 20 × 10^–4 m^2

because 1cm^2 = 0.0001m^2