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Brums [2.3K]
3 years ago
5

I need a little help on 21

Mathematics
2 answers:
lidiya [134]3 years ago
7 0

Answer:

560 seconds.

Step-by-step explanation:

liberstina [14]3 years ago
7 0

Answer:

560 seconds

Step-by-step explanation:

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What is the surface area of a cone that has a radius of 8 feet and a slant height of 12 feet? (Use 3.14 for π.)
kodGreya [7K]

Answer:

Surface area of cone is 502.4\ ft^2

Step-by-step explanation:

Given:

radius of a cone (r) = 8 feet

slant height of cone (l) = 12 feet

We need to find the surface area of cone.

Total surface area of cone = Area of circle + Area of curved surface

Now we know that,

Area of circle = \pi r^2

Area of curved surface = \pi rl

Hence Total surface area of cone = \pi r^2+\pi rl=\pi r(r+l) = 3.14 \times 8 (8+12)=3.14\times8\times20= 502.4 \ ft^2

Surface area of cone is 502.4\ ft^2.

4 0
3 years ago
Please help me I need help
sdas [7]

Answer:

3.51

Step-by-step explanation:

i took 9.2 ÷ 4.14 to find how much they charged per oz. then i took 7.8 and multipled it by 45 cents per oz.

5 0
3 years ago
Read 2 more answers
I NEED HELP PLEASE, THANKS! :)
Aleonysh [2.5K]

but where is ur question ??????

5 0
2 years ago
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Graph the line that goes through: (−2, 5) with a slope = −4
Shalnov [3]

Answer:

-1,1    0,-3

Step-by-step explanation:

start at -2, 5 and go down 4 right 1.

Rinse and repeat

5 0
3 years ago
Solve 2 2/5 - 1 1/2 .
vova2212 [387]

Answer:

9/10

Step-by-step explanation:

2 2/5 - 1 1/2

Get a common denominator of 10

2 2/5 *2/2 =  2 4/10

1 1/2 *5/5 = 1 5/10

2 4/10 - 1 5/10

Borrow from the 2 as 10/10

1 + 10/10 +4/10   - 1 5/10

1 14/10 - 1 5/10

9/10

4 0
3 years ago
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