The scales of maps $A$ and $B$ are $\frac{1}{m}$ and $\frac{1}{n}$ respectively. A river mea

Question

The scales of maps $A$ and $B$ are $\frac{1}{m}$ and $\frac{1}{n}$ respectively. A river measures $14$ cm and $18$ cm long respectively on maps $A$ and $B$. Find the ratio $m:n$. If $0.5$ cm represents a length of $2.5$ m on map $A$, calculate the actual distance of the river. Given that $n=2800$ and the actual area of a sports centre is $4212$ $\mathrm{m}^2$, find the area of the sports centre on map $A$.

Accepted Answer

$9:7$ (a) $70$m (b) $3.25$cm$^2$

Ratio, Rate and Speed - Ratio

Ratio, Rate and Speed - Ratio