Primary, secondary and tertiary sectors. There are three main types of industry in which firms operate. These sectors form a chain of production which provides customers with finished goods or services. Primary production: this involves acquiring raw materials.For example, metals and coal have to be mined, oil drilled from the ground, rubber tapped from trees, foodstuffs farmed and fish trawled.ertiary production: this refers to the commercial services that support the production and distribution process, eg insurance, transport, advertising, warehousing and other services such as teaching and health care. Your web browser does not have JavaScript switched on at the moment.
A millimeter is smaller than a centimeter. A millimeter is  one-thousandth of a meter and a centimeter is one-hundreth of a  meter.  10 mm = 1 cm.  1 cm = 10mm . 14 people found this useful. Edit.
1 centimeter is equal to 0.3937007874 inches: 1cm = (1/2.54)â³ = 0.3937007874â³. The distance d in inches (â³) is equal to the distance d in centimeters (cm) divided by 2.54: d(â³) = d(cm) / 2.54. Convert 20 cm to inches: d(â³) = 20cm / 2.54 = 7.874â³. The fraction inches are rounded to 1/64 resolution.