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Olenka [21]
3 years ago
8

What is the formula for area of a circle? 100 points

Mathematics
2 answers:
wel3 years ago
6 0

Hello!

The formula for the area of a circle is:

A = \pi x r²

sergiy2304 [10]3 years ago
3 0

Area = π r^2  where r = radius of the circle.

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Use Newton's method with initial approximation x1 = 1 to find x2, the second approximation to the root of the equation x4 − x −
drek231 [11]

Answer:

x_{2} = 0.0000

Step-by-step explanation:

The formula for the Newton's method is:

x_{i+1} = x_{i} + \frac{f(x_{i})}{f'(x_{i})}

Where f' (x_{i}) is the first derivative of the function evaluated in x_{i}.

x_{i+1} = x_{i} + \frac{x_{i}^{4}-x_{i}-3}{4\cdot x_{i}^{3}-1}

Lastly, the value of x_{2} is determined by replacing x_{1} with its numerical value:

x_{2} = x_{1} + \frac{x_{1}^{4}-x_{1}-3}{4\cdot x_{1}^{3}-1}

x_{2} = 1.0000 + \frac{1.0000^{4}-1.0000-3}{4\cdot (1.0000)^{3}-1}

x_{2} = 0.0000

8 0
3 years ago
The diagram shows a solid formed by joining a hemisphere, of radius rcm, to a cylinder, of radius rcm and height hcm. The total
posledela

Answer:

Step-by-step explanation:

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Total surface area of the solid = 4πr²+2πrh

r is the radius of the sphere and the cylinder

h is the height of the cylinder

Total surface area of the solid = 2πr(r+h)

If the total height of the solid is 18 cm, then r+h = 18cm

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205π = 2πr(18)

205π = 36πr

205 = 36r

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3 years ago
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7 0
2 years ago
Read 2 more answers
A = πab/4 solve for b
Studentka2010 [4]

Answer:

4A/ (πa)  = b

Step-by-step explanation:

A = πab/4

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3 years ago
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