3 years ago

I need help plz i'm confused!!! i'll give brainiest to the right answer

Mathematics

1 answer:

kogti [31]3 years ago

8 0

C is the answer Ashdod

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4. What is the circumference of a circle whose area is 81π cm squared?

vichka [17]

Area = pi*r^2
Circumference = 2pi*r

Step 1: find the radius from area
81pi=pi*r^2
81=r^2
9=r

Step 2: plug in radius to the circumference equation

Circumference = 2pi*r

18pi is the answer, otherwise know as 56.52 as well.

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3 years ago

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Will mark BRAINLIEST!

beks73 [17]

Hello There!

The first one seems alright.

The second one it would be 1/2.

This is because half of the options have “R” on them.

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3 years ago

PPLLEEAASSEE HHEELLPP

Lisa [10]

Answer:

Step-by-step explanation:

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3 years ago

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Marat540 [252]

Answer:

$1 \div \sqrt{}3 - \sqrt{2}$

$\frac{1 - \sqrt{2} \sqrt{3} }{ \sqrt{3} }$

$\frac{(1 - \sqrt{6}) \sqrt{3} }{ \sqrt{3} \sqrt{3} }$

$\frac{ \sqrt{3} - \sqrt{6 \times 3} }{3}$

$\frac{ \sqrt{3} - 3\sqrt{2} }{3}$

is a required answer.

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3 years ago

What is AB? Show your work.

AlexFokin [52]

Answer:

sorry i need these pionts srry :l

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2 years ago