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2 years ago

Choose the circle with the greatest area

Mathematics

1 answer:

katrin2010 [14]2 years ago

4 0

Answer:

Step-by-step explanation:

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Val needs to find the area enclosed by the figure. The figure is made by attaching semicircles to each side of a 58-by-58 squar

Savatey [412]

Answer:

We need to find the area of the semicircles + the area of the square.

The area of a square is equal to the square of the lenght of one side.

As = L^2 = 58m^2 = 3,364 m^2

Now, each of the semicircles has a diameter of 58m, and we have that the area of a circle is equal to:

Ac = pi*(d/2)^2 = 3.14*(58m/2)^2 = 3.14(27m)^2 = 2,289.06m^2

And the area of a semicircle is half of that, so the area of each semicircle is:

a = (2,289.06m^2)/2 = 1,144.53m^2

And we have 4 of those, so the total area of the semicircles is:

4*a = 4* 1,144.53m^2 = 4578.12m^2

Now, we need to add the area of the square 3,364 m^2 + 4578.12m^2 = 7942.12m^2

This is nothing like the provided anwer of Val, so the numbers of val may be wrong.

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2 years ago

A tree casts a shadow that is 231 cm long. Janet is 170 cm tall and she casts a shadow that is 102 cm long. How tall is the tree

Mekhanik [1.2K]

Answer:

139 cm

Step-by-step explanation:

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HELP WILL GIVE BRAINLIEST

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Answer: 23.2

Step-by-step explanation:

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2 years ago

A sanitation supervisor is interested in testing to see if the mean amount of garbage per bin is different from 50. In a random

frez [133]

Answer: $H_0 : \mu=50\\\\ H_1 : \mu\neq50$

Step-by-step explanation:

An null hypothesis ( $H_0$ ) is a statement of equality which shows that there is no statistical difference between the groups being tested.

An alternative hypothesis ( $H_1$ ) is a statement of inequality which shows that there is statistical difference between the groups being tested.

Let $\mu$ be the population mean amount of garbage per bin .

Given : A sanitation supervisor is interested in testing to see if the mean amount of garbage per bin is different from 50.

i.e. $\mu\neq 50$ → Alternative

Thus , the appropriate null and alternative hypotheses :

$H_0 : \mu=50\\\\ H_1 : \mu\neq50$

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2 years ago

Choose the circle with the greatest area​

Choose the circle with the greatest area