## Chemistry: Molecular Approach (4th Edition)

Using dimensional analysis gives: a.$1 km^{2} = 10^{6} m^{2}$ $195 / 10^{6} m^{2} = 1.95 \times 10^{-4} km^{2}$ b. $1 dm^{2} = 100 m^{2}$ $195 \times 100 = 1.95 \times 10^{4} dm^{2}$ c. $1 m^{2} = 10^{4} cm^{2}$ $195 \times 10^{4} cm^{2} = 1.95 \times 10^{6} cm^{2}$
Using dimensional analysis gives: a.$1 km^{2} = 10^{6} m^{2}$ $195 / 10^{6} m^{2} = 1.95 \times 10^{-4} km^{2}$ b. $1 dm^{2} = 100 m^{2}$ $195 \times 100 = 1.95 \times 10^{4} dm^{2}$ c. $1 m^{2} = 10^{4} cm^{2}$ $195 \times 10^{4} cm^{2} = 1.95 \times 10^{6} cm^{2}$