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Alborosie
3 years ago
10

The diameter of a circle is 8 inches. What is the area?

Mathematics
2 answers:
ELEN [110]3 years ago
7 0

16π in²

Step-by-step explanation:

Step 1:

We know that area of circle is given by

           A=π * R²  units

Where A= Area

           R= Radius = (Diameter/2)

Step 2:

Here r= 4 inches

Area =  \pi * 4 *4

         = 16\pi in²

lord [1]3 years ago
6 0
The answer is 50.24. First, take the diameter and divide it by two (4). Then, multiply it by itself (16). Lastly, multiply it by pi,(3.14).
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Answer:

132 children and 88 adults

Step-by-step explanation:

let x represent the amount of kids and y represent the amount of adults.

since the problem says there was a total of 220 people at the fair an equation can be made

x+y=220

the problem tells that each childrens ticket was 1.5$ and each adult ticket was $4 and that a total of $550 was made that day, we can use the knowledge to make an equation:

1.5x + 4y = 550

using the equations we can make this systems of equations:

1.5x + 4y =550

x + y =220

solve the systems of equations by subracting y on both sides of th bottom equation:

x=220-y

since x is equivant to 220-y it can be substitued for x in the first equation to make this:

1.5(220-y)+4y =550

--solve for y--

y=88  - there were 88 adults

substute 88 for y in the second equation

x+88=220

--solve for x--

x=138 - there were 132 children

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2 years ago
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masya89 [10]
The answer is 

\frac{3}{8} and \frac{5}{12}


8 0
3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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