3 years ago

Which expression can be used to find the area of a circle with a diameter of 80 cm?

Mathematics

1 answer:

ycow [4]3 years ago

8 0

Its D............................

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gregori [183]

It’s D bc Dt= 15x3 and it’s not that hard to solve

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helium gas accounts for less than 0.01% of Earth's atmosphere gases. write this percentage as a decimal and as a mixed number or

Sphinxa [80]

Answer: 0.01% in decimal form=0.0001 and in fraction form=1/10000

Step-by-step explanation:

Step 1 To convert the percentage in decimal form.

A percentage is a ratio expressed as a fraction of 100.

So, 0.01% means 0.01 out of 100.

Therefore,

0.01%= 0.01/100

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Step 2: Convert the decimal in fraction form.

Remove the point by dividing by 10000

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The meaning of the result is that helium account for less than one part per 10000 parts of Earth’s atmosphere gases.

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