EM-1159

Map scales

E Math · Secondary 3 · Hard · Map scales

A map shows an area of 5 cm

^2

to represent an actual area of 20 km

^2

. Find the scale of the map in the form

1:n

.

$1:4\times10^{10}$
$1:8\times10^{9}$
$1:2\times10^{11}$
$1:4\times10^{9}$

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