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Alex73 [517]
2 years ago
11

Why do Man holes(road) build by use only circular type??

Chemistry
1 answer:
sashaice [31]2 years ago
7 0

Answer: Manholes are usually round, primarily because roundness is the best shape to resist the compression of the earth; covers are round because they are easier to manufacture than square or rectangular shapes, they are easier to move by rolling, and they can't fall into the opening.

Explanation:

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What are the number of ions Fe^+2 and Fe^+3 in Fe7(CN)18?​
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Determine the total volume of a balloon if it is inflated with 2.50g helium at 180C and 0.87atm.
puteri [66]

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V = 267.2 L

Explanation:

Given data:

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