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2 years ago

Find the area of a circle having a circumference of 23π units. Round to the nearest tenth.

Mathematics

2 answers:

Ulleksa [173]2 years ago

7 0

Answer:

B. 415.5 units2

Step-by-step explanation:

charle [14.2K]2 years ago

4 0

Answer:

$\displaystyle 415,5\:units^2 ≈ A$

Step-by-step explanation:

In the circumference, 27 represents the diameter, and the radius is half the diameter, so take half of it to get 11,5. Then use it in the area formula:

$\displaystyle πr^2 \\ \\ π11,5^2 = 132,25π ≈ 415,4756284 ≈ 415,5$

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$\bold{\huge{\pink{\underline{ Solution }}}}$

$\bold{\underline{ Given }}$

We have given two linear equations that is 2x - 3y = -6 and x + 3y = 12 .

$\bold{\underline{ To \: Find }}$

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$\sf{ 2x - 3y = -6 ...eq(1)}$

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Multiply eq( 2 ) by 2 :-

$\sf{ 2( x + 3y = 12 )}$

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Subtract eq(1) from eq(2) :-

$\sf{ 2x + 6y -( 2x - 3y) = 24 -(-6)}$

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Now, Subsitute the value of y in eq( 1 ):-

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