All categories

3 years ago

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)

You might be interested in

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

lara [203]

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

NNADVOKAT [17]

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

x=14

3 0

3 years ago

Read 2 more answers

How do I rewrite this algebra problem 9x_-72

abruzzese [7]

9x-72=
9÷9= 1
72÷9=8
so... x-8

5 0

3 years ago

Read 2 more answers

FREE POINTS DONATION!!! 2 ANSWERS GETS IT!!! GET IT BEFORE SOME ELSE DOES!

True [87]

Answer:

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

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)

=> p(-2) = $(-2)^3-6(-2)^2+k(-2)+10$

<u><em>By remainder theorem, Remainder will be zero</em></u>

=> 0 = -8-6(4)-2k+10

=> 0 = -8-24+10-2k

=> 0 = -22-2k

=> -2k = 22

Dividing both sides by -2

=> k = -11

4 0

3 years ago

Read 2 more answers