Question

find the number of size of a a
reguler
Polygon whose each exterior angle has a
measure
or 72°​

Answer 1

Answer:

Duralumin is an alloy, a trademark name given to the earliest types of the age hardenable aluminum alloys. It is an alloy made up of 90% to 94% aluminum,4% copper, 1% magnesium and 0.5% to 1% manganese. It is a very hard alloy.