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kondaur [170]
3 years ago
12

How do you find the area of a circle? Isn't it π and something?

Mathematics
1 answer:
viva [34]3 years ago
7 0

Hi there!


You are partially correct on the π symbol, but there's more!


The formula for finding the area of a circle is:


A = π r².


A stands for area, π stands for pi, and r stands for radius. The ² is there because the radius is half as big as the diameter of a circle.


Hope this helps! :D


And remember, you can message me whenever you need to on anything you may need help with!

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Amy received a $80 gift card for a coffee store. She used it in buying some coffee that cost $8.24 per pound. After buying the c
SVEN [57.7K]

Answer:

5 pounds

Step-by-step explanation:

Given that:

Amount of gift card = $80

Cost of coffee per pound = $8.24

Amount left in the card = $38.80

To find:

Number of pounds of coffee bought = ?

Solution:

Let the number of pounds of the coffee bought = x pounds

Cost of 1 pound = $8.24

Cost of x pounds = $8.24 \times x

Writing the equation as per question statement:

80 - 8.24x = 38.80\\\Rightarrow 80 - 38.80 = 8.24x\\\Rightarrow  8.24x = 41.2\\\Rightarrow x = \dfrac{41.2}{8.24}\\\Rightarrow \bold{x = 5\ pounds}

Therefore, 5 pounds of coffee was bought.

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3 years ago
X + 37<br> x + 67<br> 90<br> 104<br> 14<br> -14<br> -7°
natulia [17]
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3 years ago
2<br> Carrots<br> €1.80 per kg<br> How much does 250 g of carrots<br> cost?
igomit [66]

Answer:

The cost of 250 g carrots is €0.45.

Step-by-step explanation:

Given that,

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We know that, 250 gram = 0.25 kg

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3 years ago
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almond37 [142]

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liberstina [14]

Answer:

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Step-by-step explanation:

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