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zmey [24]
3 years ago
14

What 2d shape makes a cylinder

Mathematics
2 answers:
Crazy boy [7]3 years ago
7 0
Two 2d shapes make a cylinder.
A square or rectangle for the tube in the middle.
And circles on the ends
Rashid [163]3 years ago
4 0
A tub in the middle with two circles on the ends
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The circumference of ruby's old swimming pool is 47.1 feet. Her new swimming pool has a diameter of 21 feet. How much larger is
Alla [95]

The new pool is 18.84 feet larger in circumference than the old one.

<u>Explanation:</u>

Given:

Circumference of the pool = 47.1 feet

Diameter of the new pool, d = 21 feet

radius, r = 21/2 feet

Circumference of the new pool = ?

We know:

Circumference = 2πr

where,

r is the radius

On substituting the value:

C = 2 X 3.14 X \frac{21}{2}

C = 65.94 feet

The difference in circumference of the two pools = 65.94 - 47.1 feet

                                                                                  = 18.84 feet

Therefore, the new pool is 18.84 feet larger in circumference than the old one.

6 0
3 years ago
A new car is purchased for $49,000 and over time its value depreciates by one half every 5 years. What is the value of the car 2
vovikov84 [41]

Principal: $49,000

Depreciation Rate: 50%

Depreciation Time: 5 years

Exponential Function: y = 49,000 (0.50)^x

Plug it in: y = 49,000 (0.50)^4

0.5^4= 0.0625

0.0625 x 49,000 = 3062.5

Value of Car after 20 years: 3062.5

Now, we need to find out how much the car decreases in ONE year.

Half of 3062.5 = 1531.25

1531.25/5 = 306.25

3062.5 - 306.25 = 2756.25

Value of car after 21 years: $2756 ---> 2800 (nearest hundred dollars my bad)

Hope this helps! Have a great day!

4 0
3 years ago
Did I get this right? Please explain how I got it right if I did
viva [34]

Answer:

no 6 hours

Step-by-step explanation:

no it would be 6 hours

25% = 7.5 hours

5% = 1.5 hours

7.5 - 1.5 = 6 hours

5 0
3 years ago
Find the slope of the line whose equation is 2x - 3y + 6 = 0.
Alona [7]
Hi

y = mx+b

2x - 3y + 6 = 0
3y = 2x+6
y = 2x/3+6/3
y = 2x/3+2

m = 2/3


7 0
3 years ago
Read 2 more answers
If the original quantity is 15 and the new quantity is 19, estimate the percent change.
trapecia [35]

Answer:

25% increase

Step-by-step explanation:

5 0
2 years ago
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