320 m long, 4 m wide, 15 cm thick

320 m long, 4 m wide, 15 cm thick


The area is 320 * 4 = 1280 square meters



Known length: 1 meter. Width: 15 cm. How to calculate the area (square)?


Isn't it very simple? 15 cm is 15 cm. You can convert 1 meter to 100 cm, 100 * 15 = 1500 square cm. If the unit is square meter, wouldn't it be good to convert it again



One cubic meter of soil is 27 yuan, 4 meters wide, 40 cm thick and 300 meters long. Pave a road, calculate how much it costs, and find the detailed formula


Length (m) * width (m) * thickness (m) * unit price (yuan / m3) = cost of soil
300 * 4 * 0.4 * 27 = 12960 yuan