Identify the preposition in the following sentence: before leaving for practice, make sure you have packed a lot of water; it's hot outside!
a. before
b. leaving
c. practice
d. packed

The word "before" is a preposition.

Explanation:

Before works as a preposition, an adverb and as a conjunction, it is a preposition of time and place, the other options are verb, am two nouns, packed is a past participle conjugation of pack, the other two options are nouns that refer to an object thing or situation in the sentence, option A is the only preposition.

we know that, volume of a rectangular prism is given by :

✿   {length × width × height}

given : the length of rectangular prism = 5.5

given : the width of rectangular prism = 6

given : the height of rectangular prism = 3

⇒ the volume of given rectangular prism = {5.5 × 6 × 3}

⇒ the volume of given rectangular prism = 99

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