Question

A well with inner diameter 12 m is dug up to a depth of 17 m. Earth taken out of it is evenly placed all around it up to a height of 7.2 m to form an embankment. Find it's width​

Answer 1

Answer:

The reactivity series is a series of metals, in order of reactivity from highest to lowest. It is used to determine the products of single displacement reactions, whereby metal A will replace another metal B in a solution if A is higher in the series. Activity series of some of the more common metals, listed in descending order of reactivity.