Express the following number in shorter form by expressing as product of a number and a power of 10.
(a) `27,000,000`
(b) `30,000,000,000`
(c)`0.000000043`

Explanation

(a) `27,000,000 =27 xx10^6`
(b) `30,000,000,000=3xx10^6`
(c) `0.000000043= (43)/(1000000000) =(43)/(10^9)=43xx10^(-9)`