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3 years ago

PLS HELP!! I WILL GIVE THE FIRST GOOD ANSWER BRAINLIEST!!!

Mathematics

2 answers:

liubo4ka [24]3 years ago

4 0

Answer:

Step-by-step explanation:

mr Goodwill [35]3 years ago

3 0

Answer: I would say c

Step-by-step explanation:

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The figure shows the layout of a symmetrical pool in a water park. What is the area of this pool rounded to the tens place? Use

k0ka [10]

Answer:

$2489ft^{2}$

Step-by-step explanation:

The pool are is divided into 4 separated shapes: 2 circular sections and 2 isosceles triangles. Basically, to calculate the whole area, we need to find the area of each section. Due to its symmetry, both triangles are equal, and both circular sections are also the same, so it would be enough to calculate 1 circular section and 1 triangle, then multiply it by 2.

<h3>Area of each triangle:</h3>

From the figure, we know that <em>b = 20ft </em>and <em>h = 25ft. </em>So, the area would be:

$A_{t}=\frac{b.h}{2}=\frac{(20ft)(25ft)}{2}=250ft^{2}$

<h3>Area of each circular section:</h3>

From the figure, we know that $\alpha =2.21 radians$ and the radius is $R=30ft$ . So, the are would be calculated with this formula:

$A_{cs}=\frac{\pi R^{2}\alpha}{360\°}$

Replacing all values:

$A_{cs}=\frac{(3.14)(30ft)^{2}(2.21radians)}{6.28radians}$

Remember that $360\°=6.28radians$

Therefore, $A_{cs}=994.5ft^{2}$

Now, the total are of the figure is:

$A_{total}=2A_{t}+2A{cs}=2(250ft^{2} )+2(994.5ft^{2})\\A_{total}=500ft^{2} + 1989ft^{2}=2489ft^{2}$

Therefore the area of the symmetrical pool is $2489ft^{2}$

3 0

3 years ago

Please try to answer quickly my brainly app is crashing

Ne4ueva [31]

The formula to calculate the lateral area of a cone is given by

$LA=pi*r*l$

where

LA=10.5pi in2

r=2.1 in

l=? slant height

substitute given values

$\begin{gathered} 10.5pi=pi*2.1*l \\ solve\text{ for l} \\ l=\frac{10.5pi}{pi*2.1} \\ \\ l=5\text{ in} \end{gathered}$ <h2>The answer is 5 inches</h2>

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1 year ago

A scientist studied the number of eggs a species of bird lays each year. He found that the

Gnoma [55]

Answer:

2+2 is 4 minus 1 is 3.

Step-by-step explanation:

Think about the question, you can't say that i am wrong.

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3 years ago

Determine the effective annual yield for each investment.

Lyrx [107]

I think it’s B but don’t at me

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3 years ago

A fully loaded and fueled spacecraft can weigh close to million pounds. What is this weight converted to tons?

Dafna1 [17]

Answer:

The answer is 500 pounds

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3 years ago