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3 years ago

Work out the perimeter of a semicircle with radius 3cm.give your answer in terms of pi

Mathematics

2 answers:

dimulka [17.4K]3 years ago

8 0

Answer:

(6 + 6π) cm

Step-by-step explanation:

2π(3) / 2 + 3x2

= (6 + 6π) cm

saw5 [17]3 years ago

6 0

Answer:

None.

Step-by-step explanation:

The fact that you don't know how to solve this means you haven't studied. At all.

But, I'll give you some hints:

1. The perimeter of a semicircle is half the perimeter (or length) of the circle.

2. The length of a circle is given by the formula $2\pi r$

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kherson [118]

63 it's so easy I'm 13 and I know this

5 0

3 years ago

Will give brainliest

ehidna [41]

Answer:

25.047 or roughly 25.

Step-by-step explanation:

I solved it wrong the first time then i double check with wolframalpha and got the correct number.

We know that the area of the tile is 18 $\sqrt{3}$ and it makes a triangle, we also know the base and height. In this case the base is 2 $\sqrt{3}^{x/12}$ and the height is also given which is $\sqrt{3}^{\frac{x}{6} }$ .

Area of triangle = $\frac{bh}{2}$ ,

substituting we will end up with 18 $\sqrt{3}$ =( 2 $\sqrt{3}^{x/12}$ * $\sqrt{3}^{\frac{x}{6} }$ ) / 2

Here is the tricky part $\sqrt{x} = x^{\frac{1}{2} }$ , i totally forgot about that lol.

Simplifying: we will get 18 $\sqrt{3}$ = $3^{\frac{x}{8} }$

Now, in order to find the x, we will need to take the log of both sides.

$log18\sqrt{3} = \frac{x}{8} log3$

Solving for x we end up getting:

$8\frac{log18\sqrt{3} }{log3}$ = x

where x = 25.047.

To be honest I deserve a nobel prize not a brainliest lol.

Good question bro, take it easy.

5 0

3 years ago

Ice cream sales (in gallons) fluctuate from month to month, depending on the season. A local ice cream lover would like to condu

Oksi-84 [34.3K]

This is two independent sample test.

<u>Step-by-step explanation</u>:

Ice cream sales will fluctuate from month to month. So sales will differ every month. A separate sale will be made on Blank Slate Creamery.
A first sample test will be taken on Blank Slate Creamery. After that, the average value will be noted. Now sales will be noted on Ben & Jerry's. After that value will be added.
Now, these two values will be compared. We should check which has the highest value. Using this we can identify which ice cream has a higher record.

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4 years ago

It is always, sometimes, or never true. Explain your reasoning in words.<br> (a) 5 − 2 = 6

Burka [1]

Answer:

Step-by-step explanation:

5-2=3

Inverse/reciprocal =7

3 0

3 years ago

Ramon's schools band is raising money for a trip to a band competition. They have raised $425 so far. They need to raise at leas

Oksi-84 [34.3K]

$950=$425+$A
950-425=525
A=525

6 0

3 years ago

Work out the perimeter of a semicircle with radius 3cm.give your answer in terms of pi​

Work out the perimeter of a semicircle with radius 3cm.give your answer in terms of pi