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Korvikt [17]
2 years ago
9

How is the formula for the circumference of a circle derived

Mathematics
1 answer:
Tanzania [10]2 years ago
8 0

Answer:

Essentially by the definition of  

π

Step-by-step explanation:

idk m8 i just googled it. seems legit ill send the link if youd like

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A bull’s-eye with a 4-inch diameter covers 20 percent of a circular target. What is the area, in square inches, of the target?
kipiarov [429]

Area of a circle is found using the formula: Area = π * r^2

Using 3.14 for π

Area of the bull'e eye = π * 2^2 = 4π = 4 * 3.14 = 12.56 square inches.

This is 20% of the entire target.

To find the area of the entire target, divide the area of the bull's eye by the percentage:

Area = 12.56 / 0.20 = 62.8 square inches.

Round the answer as needed.

3 0
3 years ago
Read 2 more answers
The millers are going to put a pool in their backyard this summer. The pool will have a depth of 5 feet, and the dimensions show
erica [24]

Answer:

D : 510 units

Step-by-step explanation:

NOTE:

Something to consider when solving problems like this is to break the large shape down into smaller, more managable shapes. So for this problem, you can break down this irregular shape into two rectangles. This will make solving problems similar to this easier in the future :)

WORK:

I broke down this shape into two rectangles with the following dimensions:

- 12 meters by 5 meters

- 3 meters by 14 meters

You also know that the depth has to be 5 feet (the problem itself did not account for differences in feet and meters, as when I converted the 5 feet to meters and solved that way, none of the answers were correct)

Using this information, you can now solve for the volume of each of the rectangles

12*5*5 = 300 units

3*14*5 = 210 units

Then, you simply add the two volumes together to find the total volume needed to fill the pool which equals

510 units

3 0
2 years ago
Where do you place the parentheses in the expression 4+3^2•5-2 to equal 31
Pani-rosa [81]

4+3^2•5-2

4+3^2\cdot(5-2)=4+9\cdot3=4+27=31

Used PEMDAS:

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

8 0
3 years ago
㏒₅(x+4)+㏒₅(x+1)=2 solved
balu736 [363]

Answer:

x= \frac{-5+\sqrt{109} }{2}

or dec. is x= 2.72

8 0
3 years ago
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Alberto has 92 stamps in one large álbum and 38 stamps in anotaré small álbum. How can he use mental math to find how many more
Leokris [45]

Answer:

The answer would be the large album has 54 more stamps than the small album.

Step-by-step explanation:

... 92 - 38 = 54

Do you need a drawing done though?

4 0
2 years ago
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