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Firlakuza [10]
3 years ago
9

A particular model of walkie talkie can broadcast in a circular .the radius of the broadcast area is 10,000 feet. find the area

of the circle to the nearest square foot use 3.14 for pi
Mathematics
1 answer:
navik [9.2K]3 years ago
6 0
A = pi * r * r 

A = 3.14 * 10000 * 10000 = 314000000 ft^2
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Answer: Last Option

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Step-by-step explanation:

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x =\frac{Det(A_X)}{Det(A)}

y =\frac{Det(A_Y)}{Det(A)}

For this problem we know that:

Det(A) = |A|=\left|\begin{array}{ccc}4&-6\\8&-2\\\end{array}\right|

Solving we have:

|A|= 4*(-2) -(-6)*8\\\\|A|=40

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Solving we have:

|A_X|=38*(-2) - (-6)*26\\\\|A_X|=80

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Step-by-step explanation:

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