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Oliga [24]
3 years ago
11

Work out the surface area of this cylinder 8cm diameter 16.8cm height

Mathematics
1 answer:
zimovet [89]3 years ago
5 0
Surface area: 522.76cm
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The volume of a certain right circular cone is 30 cubic inches. What is the volume, in cubic inches, of a second right circular
mrs_skeptik [129]

Answer:

V = 15 in.³

Step-by-step explanation:

The original cylinder has radius r and height h.

V = πr²h

Its volume is 30 in.³, so

πr²h = 30 in.³

The new cylinder has radius (1/2)r and height 2h.

Its volume is

V = π(r/2)²(2h)

V = πr² × 2h/4

V = πr²h/2

πr²h is the volume of the original cylinder, and it is 30 in.³.

V = 30 in.³/2

V = 15 in.³

3 0
1 year ago
How to start, there is also a second part to it but I'm pretty sure once I get the right formula I will be all set
Furkat [3]
C=.35x + 9.50

.35 is the amount per check so you put the x next to it because that represents how may check you use plus 9.50 per month
hope this helps
7 0
3 years ago
Read 2 more answers
(5a + a2 - 14) (10a + a2 + 39)
yan [13]
15a+a4+25 is the answer
8 0
3 years ago
Pls help me!!! I don’t know the answer I will give u brainlyest if I get it correct
inna [77]

Answer:

C?

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
I also need help with 1,000,000 in exponential form , 10x10 , and 10,000 x10 please
xxMikexx [17]

Answer:

1,000,000= 10^6

10 times 10 is 100 (10^2)

10,000 times 10 is 100,000 (10^5)

7 0
3 years ago
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