Rose Harrison and Clara Huizink Solutions for Exercise 23: Mixed practice

A water tank has length $2250 \mathrm{mm}$, width $5800 \mathrm{mm}$ and height $3860 \mathrm{mm}$. Calculate the capacity of the tank in liters.  [Enter the value excluding units]

Find the number of cubic inches in $9{ \mathrm{cm}}^3$.  [Enter the value correct up to three decimal places and excluding units]

Find the number of ${\mathrm{m}}^2$ in $6$ square yards.  [Enter the value correct up to three decimal places and excluding units]

A square field has area $2323.24 {\mathrm{ft}}^2$. Find the side length of the field in meters.

The density of nickel is $8900 \mathrm{kg}/{\mathrm{m}}^3$. Find the density of nickel in $\mathrm{g}/{\mathrm{cm}}^3$. [Enter the value excluding units]

Platinum has a density of $21450 \mathrm{kg}/{\mathrm{m}}^3$. Gold has a density of $19.32 \mathrm{g}/{\mathrm{cm}}^3$. Determine which metal is denser.

A car travels at $20 \mathrm{m}/\mathrm{s}$ in a village where the speed limit is $50 \mathrm{km}/\mathrm{h}$. Determine if the car is exceeding the speed limit.

A top speed of $231.523 \mathrm{mph}$(miles per hour) was set by a formula $1$ racing car in $2005$. A Chinook helicopter has a maximum speed of $87.5 \mathrm{m}/\mathrm{s}$ (meters per second).

Determine which is faster.