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3 years ago

Determine if line AB is tangent to the circle. If so, then explain why.

Mathematics

1 answer:

marissa [1.9K]3 years ago

5 0

Answer:

Step-by-step explanation:

if a line AB is tangent to the circle with centre O then radius OA ⊥AB and AB touches it at exactly one point.

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PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B

Inga [223]

Answer:

Airplane 1- Graph C

Airplane 2- Graph B

Airplane 3- Graph D

Step-by-step explanation:

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2 years ago

Read 2 more answers

the surface area of a sphere is 1,017.36 square inches.what is the volume of the sphere? use 3.14 for pi

emmasim [6.3K]

Answer:

Area = 254.34 inches ³

Step-by-step explanation:

The formula to find the surface area of a sphere is:

$SA = 4\pi r^{2}$

To find the volume of the sphere, we first need to figure out the radius ( $r$ ) of the sphere. We can accomplish this by reversing the formula that was used to find the surface area. $(1017.36 in^{2})$

$SA = 4\pi r^{2}$

$1017.36 = 4\pi r^{2}$

Divide both sides by pi ( $3.14$ ).

$1017.36 = 4\pi r^{2}$

$324 = 4 r^{2}$

Divide both sides by 4.

$324 = 4 r^{2}$

$81 = r^{2}\\$

Find the square root of both sides.

$81 = r^{2}\\$

$\sqrt{81} = r$

radius = 9

Insert the value of the radius into the formula for finding the volume of a sphere. $(A=\pi r^{2})$

$(A=\pi r^{2})$

$A=\pi (9)^{2}$

$A=\pi (81)$

$A = 254.34$

Area = 254.34 inches ³

~Hope this helps!~

4 0

3 years ago

What is the number and the question of 2+2

Maurinko [17]

The answer is 4. The question is what is 2+2?

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3 years ago

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azamat

Answer:

$254.5 m^2$

Step-by-step explanation:

Area of a Circle: $A=\pi r^2$

The r is the length of the radius of the circle

The radius of the shown circle is 9 m

$A=\pi 9^2$

$A=81\pi=254.469004941$

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3 years ago

Read 2 more answers

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ANTONII [103]

What is 'V =' referring to?

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3 years ago