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Svetach [21]
3 years ago
14

How does the volume of a cylinder change when its diameter is tripled

Mathematics
2 answers:
guajiro [1.7K]3 years ago
8 0

Answer:

9πr²h

Step-by-step explanation:

cupoosta [38]3 years ago
5 0
V(cylinder)= πr²h
d=2r,
d is diameter, r is radius.
When diameter is tripled, a new diameter D=3d,
new radius R=3d/2=(3*2r)/2=3r
R=3r

V(new cylinder)= πR²h = π(3r)²h=9πr²h

V(new cylinder)/V(cylinder)=9πr²h/πr²h=9

Volume new cylinder 9 times more the volume of old cylinder.




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A plant nursery is having a sale. Potted begonias are marked down 27%, and tomato seedlings are marked down 35%. If you pay $6.
olchik [2.2K]

Based on the markdowns and the number of each of the plants purchased, the amount saved is <u>$9.06</u>

Potted Begonias cost $6.57 when discounted by 27%. Their cost must be:

<em>Discounted cost = Original cost x (1 - Discount)</em>

6.57 = Original x (1 - 27%)

Original = 6.57 / 0.73

Original = $9.00

The savings here are therefore:

= 2 x (9 - 6.57)

= $4.86

The original cost of the Tomato seedlings is:

= 2.60 / ( 1 - 35%)

= $4.00

Savings would be:

= 3 x (4 - 2.60)

= $4.20

Total savings are therefore:

= 4.86 + 4.20

= $9.06

In conclusion, $9.06 was saved.

<em>Find out more on this at brainly.com/question/25748983. </em>

8 0
2 years ago
Can someone please help me
Natalija [7]
ANSWER: $84

EXPLANATION:

We need to know the surface area of the room with the specified dimensions.

A = 2(wl + hl + hw)

w = 12
h = 8
l = 16

A = 2( (12 * 16) + (8 * 16) + (12 * 8) )

A = 2(192 + 128 + 96)

A = 2(416)

A = 832 square feet


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(Round that up to the next whole number)

You need 6 gallons, or 6(14) dollars
4 0
3 years ago
Marking brainliest for the right answer
Finger [1]

They are two triangles faces that are (6x2)/2  = 6 and the other one is 6 to

so that's 12

the top side is 4 x 2 = 8

back side is 3 x 2 =  6

the bottom side is 2 x 6 = 12

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4 0
2 years ago
Read 2 more answers
Please help me answer this.
Mariulka [41]

Answer:

(a) 3

Step-by-step explanation:

Calculate the slope m of the line given using the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (0,3) and (x₂, y₂ ) = (3, 2)

m = \frac{2-3}{3-0} = - \frac{1}{3}

given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-\frac{1}{3} } = 3 → (a)


5 0
2 years ago
Drag and drop the descriptions into the boxes to correctly classify each pair of numbered angles. Each description may be used m
ANTONII [103]
< 1 and < 2 are vertical angles...because they are opposite angles made by two intersecting lines
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6 0
3 years ago
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