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3 years ago

A fence is ito be nstalled around a semicircle

1 answer:

3 0

If the lenght of a circle circumference is given by:
$c = 2\pi \times r$

So the lenght of a semicircle circumference is given by the half of it:
$c \: (semicircle) = (2\pi \times r) \div 2 \\ c \: (semicircle) =\pi \times r$

Radius (R) = 12 ft
$c \: (semicircle) =12\pi \: ft$

Answer = 12pi ft of fence.

You might be interested in

Which expression is equivalent to x - 5/3

soldier1979 [14.2K]

Answer:

$\frac{1}{3}(3x-5)$

Step-by-step explanation:

If you expand an equation you get its equivalent expression

6 0

3 years ago

Fabio is driving west away from Albany and towards buffalo along interstate 90 at a constant rate of speed of 62 miles per hour.

emmasim [6.3K]

Answer:

The distance between Albany and Buffalo along the I90 is 288.8 mi.

The speed of Fabio is 62 mph.

After 1.5 hours, he is 221 miles from Albany.

Things we can calculate here:

Using the relation:

Distance = time*speed.

We can calculate the number of miles that he moved in that 1.5 hours.

D = 62mph*1.5h = 93mi.

If after 1.5 hours, he was 221 miles Albany, then before that he was 93 miles closer to Albany.

His initial position was:

221 - 93 = 128 miles away from Albany.

Now we also can calculate the time left to arrive at Buffalo.

We know that the distance between Albany and Buffalo is 288.8 mi

And he is 221 mi away from Albany.

Then the distance left to Buffalo is:

288.8mi - 221mi = 67.8mi

And the time left will be:

Distance/speed = time

67.8mi/62mph = 1.1 hours.

He needs to drive for another 1.1 hours to get to Buffalo.

7 0

3 years ago

Find an expression which represents the difference when (6x-3y) is subtracted from (9x+2y) in simplest terms.

Alex73 [517]

Answer:

$3x+5y$

Step-by-step explanation:

Subtract (6x-3y) from (9x+2y):

$(9x+2y)-(6x-3y)$

This can also be seen as:

$(9x+2y)-1(6x-3y)$

Distribute the -1 to (6x-3y):

$(9x+2y)-1(6x)-1(-3y)\\\\(9x+2y)-6x+3y$

Simplify the parentheses:

$9x+2y-6x+3y$

Group like terms:

$(9x-6x)+(2y+3y)$

Combine:

$3x+5y$

This expression can't be further simplified. Therefore, 3x+5y is the answer.

:Done

6 0

3 years ago

WILL MARK BRAINLIEST

slamgirl [31]

Answer:

down 6,right 4, rotate 180 degrees assuming we are starting from the blue heart.

Step-by-step explanation:

4 0

3 years ago

Find the volume of a pyramid with a square base, where the perimeter of the base is

Yuki888 [10]

Answer:

V= 57.8 cm^3

Step-by-step explanation:

i had the same question and got it wrong and it showed me the correct answer so basically

V=1/3(11.56(15)

V=57.8

3 0

3 years ago