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2 years ago

To the nearest tenth, what is the area of a circle whose radius is 2.2 feet?

Mathematics

2 answers:

den301095 [7]2 years ago

7 0

A = πr² = 3.14 · 2.2² = 3.14 · 4.84 ≈ 15.2 ft²

Margarita [4]2 years ago

7 0

The answer is 15.2 squared...

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2 years ago

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Answer:

$if \: log(x ) = 3 \\ log_{10}(x) = 3 \\ {10}^{3} = x \\ therfore \to \: \boxed{x = {10}^{3} } \\ \\ if \: log(y ) = 2 \\ log_{10}(y) = 2 \\ {10}^{2} = y \\ therfore \to \: \boxed{y= {10}^{2} }$

Step-by-step explanation:

$x^2 -7xy =3000y \: then \to \\ x^2 =3000y + 7xy \\ {(10 ^{3} )}^{2} = 3000(10)^{2} + 7( {10}^{3} \times {10}^{2}) \\ {10}^{6} = 3000(10)^{2} + 7( {10}^{3} \times {10}^{2}) \\ {10}^{6} = 3000(10)^{2} + 7( {10}^{5} ) \\ {10}^{6} = 300000 + 700000 \\ \boxed{{10}^{6} = 1000000} \\ hence \: the \: equation \to \: x^2 -7xy =3000y \\ \boxed{ is \: corret}$

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2 years ago

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Anon25 [30]

Answer:

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Step-by-step explanation:

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Using the discriminant

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Using the coefficients with also adding the signs before each

Insert the values

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= 4 - 4 *4 * -8

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