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Lilit [14]
3 years ago
5

How are the radius and diameter of a circle related?

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
6 0
The radius is always half the diameter. So, your answer is A.
Readme [11.4K]3 years ago
4 0

Answer:

The answer is A) because the radius is 1/2 of the diameter.

Step-by-step explanation:

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A number divided by-9 is -16
drek231 [11]
Equation= x divided by -9 = -16
solve= 9 x 16 = 144
answer is 144
5 0
3 years ago
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Find the quotients. 25÷34 94÷-34 -57÷-13 -53÷16
Assoli18 [71]

Answer:

  • 25 ÷ 34 = 25/34
  • 94 ÷ -34 = - 94/34 = -2 28/34 = -2 14/17
  • -57 ÷ -13 = 57/13 = 4 5/13
  • -53 ÷ 16 = - 53/16 = -3 5/16
4 0
3 years ago
A cylinder has radius r and height h. A. How many times greater is the surface area of a cylinder when both dimensions are multi
Ierofanga [76]

Answer: A. Factor 2 => 4x greater

                   Factor 3 => 9x greater

                   Factor 5 => 25x greater

Step-by-step explanation: A. A cylinder is formed by 2 circles and a rectangle in the middle. That's why surface area is given by circumference of a circle, which is the length of the rectangle times height of the rectangle, i.e.:

A = 2.π.r.h

A cylinder of radius r and height h has area:

A_{1} = 2πrh

If multiply both dimensions <u>by a factor of 2</u>:

A_{2} = 2.π.2r.2h

A_{2} = 8πrh

Comparing A_{1} to A_{2} :

\frac{A_{2}}{A_{1}} = \frac{8.\pi.rh}{2.\pi.rh} = 4

Doubling radius and height creates a surface area of a cylinder 4 times greater.

<u>By factor 3:</u>

A_{3} = 2.\pi.3r.3h

A_{3} = 18.\pi.r.h

Comparing areas:

\frac{A_{3}}{A_{1}} = \frac{18.\pi.r.h}{2.\pi.r.h} = 9

Multiplying by 3, gives an area 9 times bigger.

<u>By factor 5</u>:

A_{5} = 2.\pi.5r.5h

A_{5} = 50.\pi.r.h

Comparing:

\frac{A_{5}}{A_{1}} = \frac{50.\pi.r.h}{2.\pi.r.h} = 25

The new area is 25 times greater.

B. By analysing how many times greater and the factor that the dimensions are multiplied, you can notice the increase in area is factor². For example, when multiplied by a factor of 2, the new area is 4 times greater.

3 0
3 years ago
1a Find the greatest common factor ( GCF ) of 6 and 9
Wittaler [7]

Answer:

the GCF is 3 so 2b - 3k

Step-by-step explanation:

4 0
3 years ago
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3.2666 rounded to the nearest hundredth
enyata [817]

Answer:

3.27

Step-by-step explanation:

Hope it helps!!!

5 0
3 years ago
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