Question

b) Which is the longest line?

c) Write any four small units to measure length

d) In which unit is the thickness of plastic carry bags expressed?

e) Write down the following measurements in the descending order of their values?

5 mm , 5 nm , 5 cm , 5 nm

f) What is one astronomical unit?

A B

C D

P​

Answer 1

Answer:

1. The longest is the equator, whose latitude is zero, while at the poles, at latitudes 90° north and 90° south (or –90°), the circles shrink to a point. Both longitudes or meridians, interconnecting the north pole and the south pole, are equivalent lines of similar length.
2. inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m) (terrestrial) mile (5280 feet, 1609.344 m)
3. : The unit in which the thickness of plastic bags are expressed is microns
4. 5cm> 5mm> 5nm
5. Astronomical units are usually used to measure distances within our Solar System. ... For example, the planet Mercury is about 1/3 of an AU from the sun, while the farthest planet, Pluto, is about 40 AU from the sun (that's 40 times as far away from the Sun as Earth is).