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nadezda [96]
2 years ago
6

How did eratosthenes measure the size of the earth.

Geography
1 answer:
Luden [163]2 years ago
5 0

Answer:

Eratosthenes then measured the angle of a shadow cast by a stick at noon on the summer solstice in Alexandria, and found it made an angle of about 7.2 degrees, or about 1/50 of a complete circle. ... Eratosthenes then used this to calculate the circumference of the Earth to be about 250,000 stadia

:)

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Which of the following choices is an example of a fossil?
Anna71 [15]

Answer:

D. All of these choices are correct.

Explanation:

A fossil is the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock so all of the options apply.

7 0
1 year ago
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After gaining independence in 2011, which country became internationally recognized as the newest country in the world? croatia.
iris [78.8K]

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South Sudan

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Why are domestic fuel sources preferable to international fuel sources?
gavmur [86]
Of these choices i'd say that the third option or "domestic fuels are always cheaper to acquire and renewable". I hope this helps :)
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3 years ago
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4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete
olga nikolaevna [1]
4 men x 8 days = 32 days work content & 6 women x 8 days = 48 work content

6 women at 1/400 per day x 8 days is 48/400. 352+ so 1 mans daily output is 11 work units per day x 4 men = 44 work output per day x 8 days = 352 total work output

3 men x 10 days = 30 days work content & 7 women x 10 days = 70 work content
1 man work output is 11 x 3 men x 10 days = 333 work units

one woman’s work output is 1/400 per day x 7 women = 7/400 per day x 10 days = Total of 70 work output plus men’s output of 330 = 400 work units.

10 women x 40 days = 400 work content

so if 10 men carried out the work its 11 x 10 men = 110 work units per day

400 work units + 110 work units per day = 3.6363 days work for 10 men.

1 women daily work output = 1/400 unit per person x 10 women or 10/400 work units per day so 10 x 40 days

4 Men & 6 Women = 8 days (men = 4 x 8 x 11 = 352)( 6 x 8 x 1/40 = 48/40
3 Men & 7 Women=10 days (men = 3 x 10 x 11 = 330)(7 x 10 x 1/40 =70/40)
10 women at 1/400 each per day x 40 days is 400 work units

while 10 men x 11 units is 110 units per day so for 400 units it’s 3.6363 days

1 man is equal approximately to 11 Women

10 men can do job in 3.6363 days x ratio of 11 =

Answer: It will taken 10 women x 40 days to complete the same job.
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3 years ago
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I really need help pls?
mafiozo [28]
What’s your question
8 0
3 years ago
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