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Advocard [28]
3 years ago
10

I don't understand how to find the area of a circle

Mathematics
2 answers:
Liula [17]3 years ago
6 0
You have to find out the radius of the circle so u have to find it in the middle of the circle
Darina [25.2K]3 years ago
6 0
Area of a circle is calculated by this expression....

A = πR²

What this says is Area is equal to the radius squared times pi (3.14 for all intensive purposes.)

So, we need to find A (area.)

We know the diameter (d) is twice the radius, and we know that the diameter is 10.

10/2 = 5.

The radius is 5.

A = π5²

5² = 5 x 5 = 25

A = π25

3.14 (π) * 25 = 78.5

The area of the circle with the diameter of 10 is 78.5 roughly. This is not exact but for what you are doing it will suffice.
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What happens to the value of the expression 150-j150−j150, minus, j as jjj decreases?
nikklg [1K]

Answer:

The value of the expression increases as j decreases

Step-by-step explanation:

Let f(j) = 150 - j150 - j150

f(j) = 150 - j300

As j decreases, the value of j300 decreases (i.e the farther j300 is from 150). Due to the wider gap between 150 and j300, the value of f(j) increases.

For example:

When j = 1, f(j) = 150 - (300*1) = -150

When j = 0.5, f(j) = 150 - (300*0.5) = 0

When j = 0. f(j) = 150 - (300*0) = 150

It is obvious from the analogy above that the expression 150-j150−j150 increases as j decreases

4 0
3 years ago
Select the correct pairs of triangles.
hram777 [196]

Answer:

Triangle 1 and 2

Step-by-step explanation:

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2 years ago
It takes one week for a crew of workers to pave 3/5 kilometer of a road. At that rate, how long will it take to pave 1 kilometer
Flauer [41]

Answer:

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Step-by-step explanation:

Let X= time it will take to pave 1 kilometer?

1 week=3/5 kilometer

X week =1 kilometer

Cross multiply

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X= 5/3

1.67 weeks

8 0
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Decimals greater than 7.0 but less than 13.0 use an interval of 0.6 between each pair of decimals
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The area of a parallelogram is 420cm^2 and the height is 35cm. Find the corresponding base.
bearhunter [10]
The answer is 12cm because area (420) divided bye height (35) gives you the corresponding side 12cm.
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