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Elden [556K]
3 years ago
15

Simplify -2√-45 please

Mathematics
2 answers:
algol [13]3 years ago
8 0

Answer:

l-4l+l-3l??

Step-by-step explanation:

Tatiana [17]3 years ago
4 0

Answer:

-6\sqrt{5i}

Step-by-step explanation:

\sqrt{-45} =3\sqrt{5}i

-2 * 3\sqrt{5i}

= -6\sqrt{5i}

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The complete question is:
Henry knows that the circumference of a circle is 18π inches. What is the area of the circle?

Solution:
Circumference (C) of the circle can be written as:

C=2 \pi r \\ \\ 18 \pi =2 \pi r \\ \\ r=9

Using this value of radius, we can find the Area(A) of the circle.

A= \pi  r^{2}  \\  \\ 
A= \pi (9)^{2}  \\  \\ 
A=81 \pi

Therefore, area of the circle having a circumference of 18π inches will be 81π inches²
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3 years ago
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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