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JulsSmile [24]
3 years ago
15

The telephone rates between your city and the city where your brother lives are $.54 for the first minute and $.22 for each addi

tional minute. Calculate the cost of a 10-minute call to your brother.
Mathematics
1 answer:
suter [353]3 years ago
3 0
The first minute costs $0.54.
From the second minute to nine minutes, each minute costs $0.22.
Therefore, the total cost within 10 minutes is
$0.54 + 9($0.22) = $2.52
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Find the area of a circle with diameter 12 cm.
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Answer:

113.04 cm.

Step-by-step explanation:

Step 1: <u>Formula/explain</u>

To find the area of a circle, multiply the radius by itself twice, then multiply the product pi.

a=\pi r^2(3.14*radius*radius)

Step 2: <u>Solve</u>

According to the word problem, the circle has a diameter of 12. This means it has a radius of 6.

Now, we plug the numbers into formula.

\pi 6^2 (3.14*6*6)=113.04

Step 3: <u>Conclude</u>

Therefore, the area of this circle is 113.04 cm.

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