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alexira [117]
3 years ago
6

How do I work this out?

Mathematics
2 answers:
marin [14]3 years ago
4 0
Area of a full circle is: PI x r^2

so full circle is 4^2 x PI = 16PI

the shaded part is 3/4 of the circle

16 x 3/4 = 12
 so 12 PI ft^2 is shaded

Vikentia [17]3 years ago
3 0
First, find the area of the circle as a whole. Then find the percentage or fraction of that area.

STEP ONE

As you probably know, you use this formula to find the area of any circle.

A=\pir^2

We know what the radius is, so substitute the 4 for the r in the formula.

A=4^2\pi

Simplify.

A=4^2\pi
A=16\pi

STEP TWO

Now that we know what the area of the circle is as a whole, let's find the fraction of that area. We want to the know the area of the shaded part.

Multiply the area by 3/4.

(16\pi)(3/4)
(48\pi)/4
12\pi

So, the answer is the first option.
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Cindy has 6 identical pink candies and 8 identical green candies. Find the number of ways that Cindy can line up her candies in
Daniel [21]

Answer:

175 ways

Step-by-step explanation:

Form a partition into 2 or 3 parts and the number of ways.

Pink candies

[1,5](2) , [2,4](2) , [3,3](1) , [1,4](3), [1,2,3](6) , [2,2,2](1)

Green candies

[1,7](2) , [2,6](2) , [3,5](2) , [4,4](1) , [1,1,6](3) , [1,2,5](6) , [1,3,4](6) , ,[2,2,4](3) , [2,3,3](3)

Number of ways will be:

(2+2+1) (2+6+6+3+3) + (3+6+1)(2+2+2+1)

Number of ways =( 5×21) + (10×7) = 175ways

4 0
3 years ago
Which expression is equivalent to 8 (9 + x)?
jasenka [17]

Answer:

72 + 8x

you would multiply 8 by 9 + x

5 0
3 years ago
When x=-2 and y=-3. - x^2? - 3xy + 2y^3 is
Angelina_Jolie [31]

Answer:

-66

Step-by-step explanation:

-(-2)^2=-4

-3(-2)(-3)+2(-3)^3= -62

-4-62= -66

3 0
2 years ago
4x(5x_)=(_x_)x3 associative property
11111nata11111 [884]

4x(5x3)=(4x5)x3 the associative property basically just moves the parentheses.

6 0
3 years ago
Read 2 more answers
4×-6+x+3 what is the value of this expression when x =8
soldi70 [24.7K]

Answer:

- 13

Step-by-step explanation:

4 \times  - 6 + x + 3

GIVEN THAT,

x = 8

LET'S SOLVE NOW

4 \times - 6 + 8 + 3 \\  - 24 + 8 + 3 \\  - 24 + 11 \\  = -  13

Hope this helps

brainliest appreciated

good luck! have a nice day!

5 0
3 years ago
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