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vlabodo [156]
3 years ago
11

PLEASE HELPPPPPPPPPPPPPPPP

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0

Answer:

Our radius is already given, 8.

8 x 3.14 x 2 = 50.24cm <-------- perimeter/circumference

8^2 x 3.14

64 x 3.14 = 200.96cm2 <------- area

Formula of a circumference:

2πr

2 x pie x radius (pie can be used as 22/7 or 3/4 most likely 3.14)

Formula of an area of a Circle:

πr^2

pie x radius squared (pie can be used as 22/7 or 3.14)

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The angle of deperession of aPt A, as measured form the top of
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Answer:B

Step-by-step explanation:

Given

Height of building h=30\ m

Angle of depression \theta =45^{\circ}

Suppose distance of Point A from base of building be  x

From diagram we can write

\Rightarrow \tan \theta =\dfrac{h}{x}

\Rightarrow \tan (45^{\circ})=\dfrac{30}{x}

\Rightarrow 1=\dfrac{30}{x}

\Rightarrow x=30\ m

So, point A is 30\ m from base of building

7 0
3 years ago
6(-6+x)=76-2x can i get some help please
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Answer:

x=14

Step-by-step explanation:

6(-6+x)=76-2x

Distribute

-36 +6x = 76 -2x

Add 2x to each side

-36+6x+2x = 76-2x+2x

-36 +8x = 76

Add 36 to each side

-36+36 +8x = 76+36

8x = 112

Divide by 8

8x/8 = 112/8

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3 0
3 years ago
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How do I rewrite this algebra problem 9x_-72
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9x-72=
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4 years ago
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If (x + 2) is a factor of x3 − 6x2 + kx + 10, k
kherson [118]

Answer:

k = -11

Step-by-step explanation:

Let p(x) = x^3-6x^2+kx+10

And x+2 is a factor of p(x)

Let x+2 = 0 => x = -2

Putting in p(x)

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