Question

Question 115(v)

Express of following in standard form:
Express 56 km in m.

Answer 1

$56km=56\times 1000m[\because 1km=100m]=56000m$

Standard form :
$56000m=56\times {10}^{3}m=5.6\times {10}^1\times {10}^{3}m=5.6\times {10}^{4}m$