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Paha777 [63]
3 years ago
6

Determine the surface area of this cone if the radius is 4 cm and the height is 12 cm . Round your answer to the nearest tenth .

Help please because it says 209.22 is not the answer
Mathematics
1 answer:
maria [59]3 years ago
8 0
Base Surface Area = π×42
= 50.265482457437 inches2
Lateral Surface Area = π×4×√42 + 4.72440944881892
= 77.789838023204 inches2
Total Surface Area = 128.05532048064 inches2


Or in square centimeters:

Base Surface Area = π×10.162
= 324.2927866224 centimeters2
Lateral Surface Area = π×10.16×√10.162 + 122
= 501.8689189905 centimeters2
Total Surface Area = 826.1617056129 centimeters2
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Answer:

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Step-by-step explanation:

Lets assume Individual songs = x

albums=y

6x + y = 21.99-------- y= 21.99- 6x

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Replace y in the second equation

4x+ 3(21.99-6x) = 44.97

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3 years ago
14. The sun casts a shadow from a flag pole. The height of the flag pole is three times the length of its shadow. The distance b
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3 years ago
Solve for x <br><br> (5x-1) 8x
trapecia [35]

Answer:

x = 7

Step-by-step explanation:

Given is the figure of a kite.

Opposite sides are equal... (given)

Since, measures of the angles opposite to equal sides are equal.

Also, diagonals of a kite interests at right angles.

Therefore,

8x \degree + (5x - 1) \degree + 90 \degree = 180 \degree \\  \\  (8x + 5x - 1) \degree   = 180 \degree -  90 \degree\\  \\(13x - 1) \degree   = 90 \degree\\  \\ 13x - 1 = 90 \\  \\ 13x = 90 + 1 \\  \\ 13x = 91 \\  \\ x =  \frac{91}{13}  \\  \\ x = 7

Therefore,

5 0
3 years ago
Greta is painting two different rectangular prisms. The prisms have the following dimensions.
ioda

Answer:

prism B is greater

Step-by-step explanation:

prism A

lenght: 1×4=4

width: 4×8=32

height: 8×1=8

add them all up and multiply it by 2 = 4+32+8×2=52

prism B

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width: 2×1.5=3

height:1.5×10=15

add them all up and multiply it by 2= 20+3+15×2=76

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2 years ago
Nicole is buying two posters. One poster costs $7.04 and the second costs $12.45. How much more does the second cost than the fi
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3 years ago
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