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Rina8888 [55]
2 years ago
14

Find the surface area of the figure below. Round to the nearest tenth if necessary.​

Mathematics
1 answer:
Contact [7]2 years ago
6 0

Answer:

173.4 cm^2

Step-by-step explanation:

Surface area of the cone=pi*r*l+pi*r^2=pi*(4)*(9.8+4)=173.4 cm^2

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The ratio of adults to children on a train in 7:2. There are 245 adults on the train. Find the total number of people on the tra
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Answer:

315 people

Step-by-step explanation:

Using the given ratio, we can figure out the number of children on the train by doing cross multiplication.

Let x = # of children on train.

7/2 = 245/x

7x = 490

x = 70 children

The total number of people = 70 + 245 = 315 people total

If you would like more help on math or other subjects for FREE, check out growthinyouth.org.

5 0
3 years ago
The surface area of a cylinder?
ioda

Answer:

18. 84 ft² or 18.85 ft² when rounded to the nearest tenth

Step-by-step explanation:

2πrh+2πr²

2× 3.14 × 1 × 2= 12.56

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2 years ago
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3 years ago
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X^2 +<br>1/x^2<br>+12(x+1/x) +38, <br>​
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44

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5 0
3 years ago
A door alarm works in 72 out of 100 cases and surveillance camera works in 68 out of 100 cases. what is the probability of effec
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A door alarm works in 72 out of 100 cases.

surveillance camera works in 68 out of 100 cases.

The probability that method A is used = 72/100

The probability that method B is used = 68/100

Since both method are used we find the probability of A and B

Probability ( A and B) = \frac{72}{100} * \frac{68}{100}

= \frac{306}{625}

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3 years ago
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