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2 years ago

What is the approximate area of a circle with a raduis of 15

Mathematics

1 answer:

gayaneshka [121]2 years ago

7 0

The area of the circle is 706. 5 square units

The formula for area of a circle is expressed as;

Area = πr^2

From the information given ,we have that the radius of the circle is 15

Now, let's substitute the value of the radius into the formula;

Area = 3. 14 × 15^2

Area = 3. 14 × 15 × 15

Find the square

Area = 3. 14 × 225

Multiply through

Area = 706. 5 square units

Thus, the area of the circle is 706. 5 square units

Learn more about circles here:

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Answer:

Step-by-step explanation:

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3 years ago

(-30(-7))-(210(-3))=

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Answer:

840

Step-by-step explanation:

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3 years ago

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What is 340 divided by 20?

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3 years ago

In the expression below, a is an integer. 12^3+ax-20 if 3x+4 is a factor of the expession above, what is the value of a

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Our function is:

$f(x)=12^3+ax-20$

Now, if $3x+4$ is a factor of $f(x)$ then $x=\frac{-4}{3}$ must satisfy the equation:

So, $f(\frac{-4}{3} )=0$

Putting $x=\frac{-4}{3}$

We get,

$f(\frac{-4}{3} )=12^3+a(\frac{-4}{3} )-20=0$

$12^3+\frac{-4}{3} a-20=0$

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$a=-1708 \times \frac{-3}{4} =1281$

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3 years ago