Question
Express the following in standard form: Express $56\ km$ in m.
✓
Answer
Given,
$56km = 56 \times 1000\ m$ [$\because$ $1km= 1000\ m$]
$= 56000\ m$
Standard form of $56000 \mathrm{~m}=56 \times 10^3$
$=5.6 \times 10^3 \times 10^1$
$ =5.6 \times 10^4 \mathrm{~m}\left[\because a^m \times a^n=(a)^{m+n}\right]$
$56km = 56 \times 1000\ m$ [$\because$ $1km= 1000\ m$]
$= 56000\ m$
Standard form of $56000 \mathrm{~m}=56 \times 10^3$
$=5.6 \times 10^3 \times 10^1$
$ =5.6 \times 10^4 \mathrm{~m}\left[\because a^m \times a^n=(a)^{m+n}\right]$
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