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ExtremeBDS [4]
3 years ago
10

What is the area of a circle with a radius of 21 feet?

Mathematics
1 answer:
lidiya [134]3 years ago
6 0

Answer:

Area is about 1520.53

Step-by-step explanation:

A=\pi r^{2}

A = \pi 21^{2}

A ≈ 1520.53

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Now factor -3a out of the equation for the final answer:

-3a(2x^7-4a^5+a^4)

4 0
3 years ago
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What value of k makes the equation true? (5a^2 b^3)(6a^k b)=30a^6 b^4
Ratling [72]

we are given

(5a^2 b^3)(6a^k b)=30a^6 b^4

Firstly, we will simplify left side

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Left side is

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we can arrange like terms

(5a^2 6a^k)(b^3 b)

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now, we can use property of exponent

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(30 a^{2+k})(b^{3+1})

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now, we can equate it with right side

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3 0
3 years ago
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Help fast plz are they similar or not
Arte-miy333 [17]
Not. They are not similar they are regular I think so
5 0
3 years ago
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Why does it take 10 copies of 1/6 to make the same amount of 5 copies of 1/3?
irakobra [83]
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8 0
3 years ago
Anyone know this answer? ive been stuck for a while now lol​
Rudiy27

Answer:

x > -3

the third option

Step-by-step explanation:

the circle is not filled in so we can first rule out the 2nd and last option. then since the arrow is pointing towards the positive side we can say x is more than -3

4 0
2 years ago
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