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photoshop1234 [79]
3 years ago
13

Describe the effect on the area of a circle when the radius is doubled

Mathematics
1 answer:
galina1969 [7]3 years ago
5 0

Answer:

The original area would be multiplied by the scale factor of 2² to get the new area.

Step-by-step explanation:

If you double the radius lets so lets do an example

(a=πr²) so

if x is the radius the area would be x²π      

double the radius so 2x then the area would be

(2x)²π so 4x²π

4x²π/x²π= 4 so its 4 times greater or

D the last answer or The original area would be multiplied by the scale factor of 2² to get the new area.

You might be interested in
An artist combines copper and other metals to make bronze. A bronze sculpture
natka813 [3]

Answer:

The dolphin statue is 86% copper, while the bird statue is 83% copper, making the dolphin sculpture more coppery.

Step-by-step explanation:

Since an artist combines copper and other metals to make bronze, and a bronze sculpture of a dolphin contains 43 g of copper for every 7 g of other metals, while a bronze sculpture of a bird contains 83 g of copper for every 17 g of other metals, to determine which sculpture is more coppery the following calculation must be performed:

Dolphin:

43 + 7 = 50

50 = 100

43 = X

43 x 100/50 = X

86 = X

Bird:

83 + 17 = 100

100 = 100

83 = X

83 x 100/100 = X

83 = X

Therefore, the dolphin statue is 86% copper, while the bird statue is 83% copper, making the dolphin sculpture more coppery.

3 0
3 years ago
Ben adopted 2 cats and 3 dogs. He spent a total of $455. If each dog cost him $82, how much did one cat cost him?
monitta

Answer:$104.5

Step-by-step explanation:

cats=c

Dogs=d

2c+3d=455

d=82

Substitute d=82 in 2c+3d=455

2c+3(82)=455

2c+246=455

Collect like terms

2c=455-246

2c=209

Divide both sides by 2

2c/2=209/2

c=104.5

1 cat cost $104.5

5 0
3 years ago
What is the greatest common factor of 44c^5 ,22c^3, 11c^4
SVEN [57.7K]

Answer:

Step-by-step explanation:

Multiply the GCF of 44, 22, 11 and GCF of

Thus

7 0
3 years ago
PLS HELP
LiRa [457]
There is 3600 seconds per hour.
 Multiply the speed per second by 3600 to get the speed in miles per hour then convert to kilometer/hour.

4.9 * 3600 = 17,640 miles per hour

17,640 x 1.6 = 28,224 kilometers per hour

8 0
3 years ago
Find the value of x in the given figure​
RSB [31]

To solve this problem, you will first use the Angle Sum Property to determine the value of <em>x </em>after creating an algebraic equation, combining like terms, and subtracting from both sides of an equation.

<h3>Use the Angle Sum Property</h3>

The Angle Sum Property states that all interior angles of a triangle will summate to 180º.

An equation can be created to find this when you are given two angles and missing a third. That third angle can be referred to as <em>x</em> in this scenario.

Adding the two known angles and the unknown angle will result in a sum of 180º. This means that our unknown is <em>x</em> and can therefore be placed in an equation:

65+42+x=180

<h3>Combine Like Terms</h3>

Combine the like terms by combining the constants on the left side of the equation using addition:

65+42+x=180

107+x=180

<h3>Subtract</h3>

After combining like terms, subtract 107 from both sides of the equation:

107 - 107 +x = 180-107

\boxed{x=73}

The final answer is <em>x</em> = 73 degrees.

3 0
2 years ago
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