Units of measure：练习题

A container has a volume of \(4500 \text{ cm}^3\). What is this volume in litres?

Convert a surface area of \( 0.05 \text{ m}^2 \) into square millimeters (\( \text{mm}^2 \)).

A tap fills a 10-liter bucket in 25 seconds. What is the flow rate of the tap in cubic centimeters per minute?

A bottle contains 750 milliliters of juice. What is this volume in litres?

A rectangular plot of land has an area of \( 0.2 \text{ km}^2 \). A farmer wants to cover the entire plot with grass seed. If grass seed costs \$1.50 for every \( 50 \text{ m}^2 \), calculate the total cost to seed the entire plot.

A car travels at a speed of \(90 \text{ km/h}\). Convert this speed to metres per second (m/s).

A rectangular swimming pool measures 25 meters in length, 10 meters in width, and has an average depth of 1.8 meters. Given that the density of water is \(1 \text{ g/cm}^3\), calculate the total mass of the water in the pool in tonnes.

A block of metal has a volume of \(0.005 \text{ m}^3\). The density of the metal is \(8 \text{ g/cm}^3\). Calculate the mass of the block in kilograms.

A rectangular plot has a length of \( 650 \) metres and a width of \( 0.4 \) kilometres.

(a) Convert the width of the plot into metres.

(b) Calculate the perimeter of the plot in metres.

(c) Calculate the area of the plot. Give your answer in square kilometres (\( km^2 \)).