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Gennadij [26K]
3 years ago
7

The diameter of a circle is 6 km what is the circles area

Mathematics
2 answers:
Kryger [21]3 years ago
8 0
Divide the diameter by 2 to get the radius. 6/2 = 3

A = pi r^2

Input.

A = (3.14) 3^2

A = 28.26 km^2
tankabanditka [31]3 years ago
3 0
The area of the circle will be 28.27 km.
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What is 66% of $1,678.89 plus 7.5% tax?
schepotkina [342]
50% of 1,678.89 = 839.445
10% = 167.889
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1% = 16.7889
.5% = 8.39445
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So the two added together is: 1233.98415
To get the percentages simply do the following
50% = divide by two
10% = divide 50% by five OR divide the original number by 10
5% = divide 10% by two or divide 50% by 10
1% = divide 5% by 5 or divide original by 100
.5% = divide 1% by two
4 0
3 years ago
Manuel wants to build a model of Captain America's famous shield out of cardboard. The outer ring of the shield is colored red.
zmey [24]

Answer:

615.44 in²

Step-by-step explanation:

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The area of a circle = πr²

The radius of the whole shield = 14 inches.

The first ring = Red ring

Hence, the area of the red ring =

π = 3.14

3.14 × 14²

= 615.44 in²

The area of the space he needs to paint red is 615.44 in²

7 0
3 years ago
Solve for n.<br> n^2–15n–16=0
Fofino [41]
N =  {15   +-  root of ( 225 + 64)  } / 2
  =  {15  +-  root of 289  } / 24
  = 15 + 17 } / 2   or  { 15 -17 } /2 
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5 0
3 years ago
Elizabeth works part-time to help pay for college. She has worked for the last 14 days without a day off for a total of 48 hours
Genrish500 [490]
 14 X  48X 3X4 = ur answer

3 0
3 years ago
What is 10 inches divided into 12 equal sections? If you can include work please, Thanx!
satela [25.4K]
Wouldn't you just do 10 divided by 12
4 0
3 years ago
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