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Blizzard [7]
3 years ago
7

The can of tomatoes is three times as tall but one-third as wide as the can of tuna. What is true about the areas of their label

s?

Mathematics
1 answer:
yulyashka [42]3 years ago
8 0
Problem One
Call the radius of the second can = r
Call the height of the second can = h

Then the radius of the first can = 1/3 r
The height of the first can = 3*h

A1 / A2 = (2*pi*(1/3r)*(3h)] / [2*pi * r * h] 

Here's what will cancel. The twos on the right will cancel. The 3 and 1/3 will multiply to one. The 2 r's will cancel. The h's will cancel. Finally, the pis will cancel

Result A1 / A2 = 1/1
The labels will be shaped differently, but they will occupy the same area.

Problem Two
It seems like the writer of the problem put some lids on the new solid that were not implied by the question.

If I understand the problem correctly, looking at it from the top you are sweeping out a circle for the lid on top and bottom, plus the center core of the cylinder. 

One lid would be pi r^2 = pi w^2 and so 2 of them would be 2 pi w^2
The region between the lids would be 2 pi r h for the surface area which is 2pi w h

Put the 2 regions together and you get
Area = 2 pi w^2 + 2 pi w h

Answer: Upper left corner  <<<<< Answer
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A traffic helicopter descends 153 meters to be 445 meters above the ground, as illustrated in the
sertanlavr [38]

Answer:

598 meters

Step-by-step explanation:

In the problem, the word 'decend' means to decrease in elevation.

<u>Our equation:</u>

<u>? - 153 = 445</u>

<u>Add</u><u> </u><u>153</u><u> </u><u>to</u><u> </u><u>both</u><u> </u><u>sides</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>equation</u><u>:</u>

?= 598

598 meters represents the original height of the helicopter.

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2 years ago
9. A store is offering a 20% discount on all sales over $50. If you purchase a shirt and a pair of jeans for $62.50, what
Serga [27]

Answer:

B. 12.50.

Step-by-step explanation:

62.50 x .20 = 12.5

Hope this helps and good luck.

3 0
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How far is the sun from earth in scientific notation
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1.5 × 1011 m

Step-by-step explanation:

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Can someone explain how to solve this?
BigorU [14]

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b

Step-by-step explanation:


8 0
3 years ago
The largest telescope in the world is powerful enough to identify a penny that is 5 miles away. How many yards is this?
mojhsa [17]

We are given

The largest telescope in the world is powerful enough to identify a penny that is 5 miles away

it means that

distance =5 miles

we can change it into yards

we know that

1 mile=1760 yards

d=5\times 1mile

we can replace 1 mile

d=5\times 1760 yards

d=8800 yards

So, distance in yards is 8800 yards..........Answer

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