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3 years ago

Help me with these problem as an area of a circle.

Mathematics

2 answers:

lilavasa [31]3 years ago

8 0

Answer:

33.18

Step-by-step explanation:

Using the formula in the image below, substitute $r$ for $3\frac{1}{4}$ , and simplify π to about 3.14. Then solve that. $3.14((3\frac{1}{4})^{2})=33.18$

Jobisdone [24]3 years ago

6 0

Area of circle = pi * r^2
pi * (3.25)^2 = 33.18307

Rounded = 33.18
Solution: area = 33.28 yd^2

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Andre has enough to fill 3500 in.3.. he decides to change the length of the step so that he will use all of the cement. What wil

Mrac [35]

Answer:

43.75 inches or 43 and 3/4 inches.

Step-by-step explanation:

Ok, thanks for the complement of information.

So, to find the volume of that step, which is a rectangular prism, we would use the simple formula:

V = length * width * height

In this case, we have the total volume (3,500 cu in), we have the width (10 inches) and we have the height (8 inches). But we need to find out the new length in order for him to use all 3,500 cu in of cement.

So, we transform the formula above into:

length = V / (width * height)

then we plug-in the numbers:

length = 3,500 / (8 x 10) = 3,500 / 80 = 43.75

So, the new length of the step would be 43.75 inches or 43 and 3/4 inches.

7 0

3 years ago

Tamara is planting bushes around her house. So far today she has planted 5 bushes and she wants to plant at least 12 bushes toda

bixtya [17]

Answer:

$b+5\geq 12$

Step-by-step explanation:

Given:

Number of bushes planted = 5

Minimum number of bushes to be planted = 12

Let the number of bushes planted after planting 5 bushes be $b$ .

Since, Tamara has already planted 5 bushes, total number of bushes planted is given as:

$b+5$

Now, as per question, total number of bushes should be 12 or greater than 12.

Therefore, $b+5\geq 12$ .

6 0

3 years ago

If the altitude of an equilateral triangle is 9 what is the perimeter

Volgvan

The angles in an equilateral triangle are 60 degrees.

sin 60 = 9 / h where h is hypotenuse ( = side of the triangle)

h = 9 / sin 60 = 10.392

Perimeter = 3 * h = 31.18 to nearest hundredth

3 0

3 years ago

Read 2 more answers

Hi, so I have my horse show on Saturday and I am really nervous because usually I come 1st place but now I am competing with som

kondor19780726 [428]

I say, just take a minute and remember why you are doing it. If you love it, just remember the love that you get from it. If you don't love it, then just think of it as getting experience for something else in life.

I get nervous before my cross country/track/half marathon races and all I think about is why I'm doing it in the first place.

Hope it helps!

3 0

3 years ago

Read 2 more answers

Help me pls with my geometry

garik1379 [7]

Answer:

answer in pic above

Step-by-step explanation:

did this over thrice before coming to the right answer lol

i hope it helps you xxx