exam Maths Puzzle Numerical Ability

I have a test coming up soom, and the instructor give us some problem for practice, but I am having some problem with the subject, can you explain me this two problems?

2. Suppo

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exam Other Question

How many 4-inches by 8-inch bricks are needed to build a walk 6ft. wide and 24 feet long? Given: Parallelogram ABCD with E and K on diagonal BD, DE = BK
Prove: AKCE is a Parallelogram

I have no idea how to solve this problem. Would appreciate your help.
Thanks,