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2 years ago

What is 20% of 40%? Choices: 50% 75% 100% 200% Which is it?

Mathematics

2 answers:

ki77a [65]2 years ago

3 0

I think it's 8%

Step-by-step explanation:

Anni [7]2 years ago

3 0

Are these the only options? because when I'm figuring it out I go 10% of 40% is 4%, because 10% of 40 is 4. then you should just be able to double that to 8% If that's wrong then I'm really not sure

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Use function notation to represent the area of a circle whose circumference is 136cm

Nimfa-mama [501]

Answer:

$A(\frac{68}{\pi})=\frac{4624}{\pi}$

Step-by-step explanation:

The given circle has circumference 136cm.

The formula for circumference is $C=2\pi r$

This implies that:

$136=2\pi r$

$\frac{136}{2\pi}=r$

$\frac{68}{\pi}=r$

The area of a circle is given as $A(r)=\pi r^2$

When $r=\frac{68}{\pi}$

$A(\frac{68}{\pi})=\pi*(\frac{68}{\pi})^2$

$A(\frac{68}{\pi})=\pi*\frac{(68)^2}{\pi^2}$

$A(\frac{68}{\pi})=\frac{4624}{\pi}$

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iVinArrow [24]

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