#### Answer

(a) 1Tm=1,000,000,000,000m
(b) 1Tm=1,000Gm
1Tm=1,000,000Mm

#### Work Step by Step

Since the prefix T means one trillion, 1Tm is one trillion meters.
Use the unit fractions from the earlier exercises to convert Tm to Gm and Mm.
$1Tm=1Tm\times\frac{1,000,000,000,000m}{1Tm}\times\frac{1Gm}{1,000,000,000m}= 1,000Gm$
$1Tm=1Tm\times\frac{1,000,000,000,000m}{1Tm}\times\frac{1Mm}{1,000,000m}= 1,000,000Mm$