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2 years ago

Find the area of a circle with a diameter of four

Mathematics

2 answers:

Elis [28]2 years ago

7 0

Answer:

12.57

Step-by-step explanation:

the formula for the area of a circle is $\pi r^{2}$

the diameter is 2 times the radius, so dividing it by 2 gives you a radius of 2

substitute the 2 for the r in the formula and solve

$\pi 2^{2}$

4 $\pi$

≈12.57

Furkat [3]2 years ago

5 0

Answer:

A = 12.56637

Step-by-step explanation:

$A = \pi * r^2\\\pi = 3.14159$

$r = diameter / 2\\4 / 2 = 2$

A = 3.14159 * (2^2)

= 12.56637

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2 years ago

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3 years ago

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sertanlavr [38]

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Solution:

Let us assume,

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$\frac{2}{x} - \frac{3}{y} = -5$

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Let us solve eqn 1 and eqn 2

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Add eqn 2 and eqn 3

4a + 6b = 14

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( - ) --------------------

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Now let us go back to our assumed values

Substitute a = 1/2 in assumed values

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Substitute b = 2 in assumed value

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2 years ago

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Savatey [412]

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Step-by-step explanation: hope this helps pls mark me brainliest

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shepuryov [24]

Answer:

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Step-by-step explanation:

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3 years ago