Put the 7cm and 5 cm rods together = 12 cm
Put the 9cm and 2cm rods together = 11 cm
Difference between is 1cm thus, you can use that difference to measure 1 cm.
40 square rods = 1/4 acre.
The metric system is far superior to the archaic one you are struggling with. Please stop wasting your time; study the metric system.
Different acre equivalents: * 43,560 square feet * 4,840 square yards * 160 square rods * 1/640 square mile (that is, 0.001 562 5 sq. mile) * is about 0.404 687 3 hectare
11cm
You do not need "white rods", you need a tape measure or a ruler to measure the lenght of your thumb.
There are four rods in a chain.
Need length of rods in question to answer.
None. A rod is a measure of length or distance while an acre is a measure of area. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.
The shape of the piece is not clear. It is either a quadrilateral. In that case, knowing the lengths of the four sides is not enough to determine its shape - in the same way that a square and a rhombus can have the same four sides but very different areas. Alternatively, it is a shape in 4-dimensional hyperspace in which case an acre is not an appropriate measure for its size.
Lay the 5cm & 7cm end-to end - which gives you a length of 12cm.Lay the 9cm & 2cm end-to end - which gives you a length of 11cm.Now - lay both pairs next to each other - making sure one end is flush with it's neighbour. The difference is 1cm. Something like this....-----|----------------|--The vertical bar is just for clarity.
66 feet is 2 rods.
There are generally found to be 45.72 centimeters in a cubit. A cubit is an old-fashioned measure based on the length from middle finger to elbow, so there are going to be some variations with the absolute figure.
It depends on the length of the chain and the size of the links. A chain as a unit of measure is 66 feet long. Four rods equals one chain. A link is 0.04 rod, or 7.92 inches. There are 100 links in a chain.
The earliest known length measurement unit is the cubit: the length from the point of a bent elbow to the tip of the longest finger. Because this length varies from person to person the King's arm was used as the standard cubit and "cubit rods" were cut to that length and used by everyone else to measure lengths and distances. Other units were determined similarly: the standard foot being the length of the king's foot, the inch is the length of 3 barley corns placed end to end, etc.
YES they should be.