3 years ago

What formula do you use to find the area of a circle?

2 answers:

8 0

The area of a circle is π (Pi) times the Radius squared:
A = π × r2

Or, when you know the Diameter:

A = (π/4) × D2

Or, when you know the Circumference:

A = C2 / 4π

Hope it helps

CaHeK987 [17]3 years ago

5 0

Its Area = 3.14r^2 or pie multiplied by r or the radius then square the product

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Given bc=4 cd=11 and bd=10 list angles of triangle bcd least to greatest

Nataly_w [17]

$\bar{B}\bar{C}, \bar{B}\bar{D}, \bar{C}\bar{D}$
$4, 10, 11$

4 0

3 years ago

If a_1=2a 1 =2 and a_n=(a_{n-1})^2-2a n =(a n−1 ) 2 −2 then find the value of a_4a 4 .

Aleks04 [339]

9514 1404 393

Answer:

Step-by-step explanation:

We assume your recursive formula is ...

$a_1=2\\a_n=a_{n-1}^2-2$

Using this to find a4, we get ...

$a_2=a_1^2-2=2^2-2=2\\a_3=a_2^2-2=2^2-2=2\\a_4=a_3^2-2=2^2-2=2\\\\\boxed{a_4=2}$

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3 years ago

Help will give star and brainlest or what ever is the highest you can give a comment!!!

Ray Of Light [21]

Answer:

puppies - 22

Step-by-step explanation:

since the ratio is 2:3, there are 5 parts in total. (2+3=5)

55/5=11 then multiply by parts

puppies- 2×11=22

adults- 3×11=33

check answer by adding- 22+33=55

3 0

3 years ago

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[2+(6times8)]-1 plz help

bezimeni [28]

[2+(6times8)]-1

= [2+(6 * 8)] -1

= [2+(48)] -1

= 50 -1

= 49

8 0

3 years ago

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If sin=3/5 then what cos equal to

kap26 [50]

$\sin {}^{2} ( \alpha ) + \cos {}^{2} ( \alpha ) = 1$
$\frac{9}{25} + \cos {}^{2} ( \alpha ) = 1$
$\cos {}^{2} ( \alpha ) = \frac{16}{25}$
$\cos( \alpha ) = \frac{4}{5}$

8 0

3 years ago

Read 2 more answers