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3 years ago

8

What is the approximate area of a circle with a radius of 15 ft? Use your calculator button for it Enter your answer in the box.

Round to four decimal places ft2

1 answer:

Eddi Din [679]3 years ago

7 0

Answer:

706.8583

Step-by-step explanation:

$Area = \pi r^2$

$Area = \pi 15^2$

$Area = \pi 225$

$Area = 3.14159265*225$

$Area = 706.85834625$

Round it and you get 706.8583

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Can I see how long division works on these? pls no sketchy links

alexandr1967 [171]

Answer:

Step-by-step explanation:

11) First write in decreasing exponential terms and fill in blanks with zeros.

Our goal is to eliminate all term in the dividend by subtraction

________________

2v - 2 | 2v³ - 16v² + 0v + 13

we see that 2v needs to be multiplied by 1v² to eliminate the first term

<u> v² </u>

2v - 2 | 2v³ - 16v² + 0v + 13

<u>- (2v³ - 2v²)</u>

0 - 14v²

multiply your estimate by your divisor and subtract from the dividend.

bring down the next term and repeat.

<u> v² -7v </u>

2v - 2 | 2v³ - 16v² + 0v + 13

<u>- (2v³ - 2v²)</u>

0 - 14v² + 0v

<u>-(-14v² + 14v)</u>

- 14v

repeat again

<u />

<u> v² - 7v - 7 </u>

2v - 2 | 2v³ - 16v² + 0v + 13

<u>- (2v³ - 2v²)</u>

0 - 14v² + 0v

<u>-(-14v² + 14v)</u>

- 14v + 13

<u>-(-14v + 14)</u>

-1

and remainder gets put over the divisor and appended

v² - 7v - 7 - 1/(2v - 2)

13) Same process

<u> </u>

5a + 1 | 40a³ - 12a² - 39a - 5

<u> 8a² </u>

5a + 1 | 40a³ - 12a² - 39a - 5

<u>-(40a³ + 8a²)</u>

-20a² - 39a

<u> 8a² - 4a </u>

5a + 1 | 40a³ - 12a² - 39a - 5

<u>-(40a³ + 8a²)</u>

-20a² - 39a

-(-<u>20a² - 4a)</u>

-35a - 5

<u> 8a² - 4a - 7 </u>

5a + 1 | 40a³ - 12a² - 39a - 5

<u>-(40a³ + 8a²)</u>

-20a² - 39a

-(<u>20a² - 4a)</u>

-35a - 5

-<u>(-35a - 7)</u>

2

8a² - 4a - 7 + 2/(5a + 1)

5 0

3 years ago

If AB= 5 what is the exact length of BD in square ABCD

Afina-wow [57]

Answer:

sqrt 50

Step-by-step explanation:

First of all this is a square so if AB = 5, then AD is also 5.

Let's get rid of the other triangle and only focus on triangle ABD.

Using Pythagorean theorem we are able to solve this problem.

The Pythagorean Theorem basically states that:

a^2 + b^2 = c^2

Where a and b are the legs and c is the hypotenuse, aka the thing that we are trying to solve for right now.

Substitute these numbers in: 5^2 + 5+2 = c^2

Solve: 50 = c^2

c= sqrt 50

^ and that is our answer!

5 0

3 years ago

In Sarah's class,5 times as many students like mysteries than non-fiction books.a total of 24 students like mysteries and non-fi

motikmotik

The answer is 120 (24×5=120)

5 0

3 years ago

the standard form of linear equation is Ax + By = C. if b=0 and a and C are positive, which best describes the graph of this equ

Elodia [21]

Answer:

It is a vertical line

Step-by-step explanation:

the equation will be in the form of Ax=C hence we can make X the subject of the formula giving

$x = \frac{ a}{c}$

8 0

3 years ago

Read 2 more answers

Need help with this question.

Lisa [10]

9514 1404 393

Answer:

643.72 m²

Step-by-step explanation:

The area is the sum of the areas of the parts. The figure can be divided into a triangle and a semicircle.

The formula for the area of the triangle is ...

A = 1/2bh

For the given base of 28 m and height of 24 m, the area is ...

A = 1/2(28 m)(24 m) = 336 m²

__

The area of a semicircle is given by the formula ...

A = (π/8)d² . . . . for diameter d

The given diameter is 28 m, so the area is about ...

A = (3.14/8)(28 m)² = 307.72 m²

__

Then the total area of the figure is ...

total area = triangle area + semicircle area

total area = 336 m² +307.72 m² = 643.72 m²

4 0

3 years ago