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Nana76 [90]
3 years ago
15

Help please, stuck on this one!

Mathematics
1 answer:
allochka39001 [22]3 years ago
4 0

Answer:

AFCE = 30

P+Q = 11

Step-by-step explanation:

From the picture, you can see the figure can be decomposed into two identical large triangles with area 20, and 4 identical longer ones, that have to cover the remaining area 40, thus 10 each.

From that you can count the area.

Second puzzle is just trial and error.

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What’s the total height of a 17-story building that measures 4 meters 2 decimeters 17 centimeters per story?
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<h2>Hello!</h2>

The answer is:

The total height of the 17-story building is 74.29 meters.

<h2>Why?</h2>

This a unit convertion problem. We know that there is a 17-story building and the height of each story, we need to convert the units and then, calculate the total height.

We need to use the following convertion factors:

1meter=100cm

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Now, converting the given units we have:

Meters to centimeters:

1meter=100cm

4*1meter=4*100cm

4m=400cm

Decimeters to centimeters:

1decimeter(dm)=10cm

2*1decimeter(dm)=2*10cm

2dm=20cm

So, we know that one story measures 4 meters, 2 decimeters (dm) and 17 centimeters (cm), and if we want to calculate the total height of the 17-story building, we need to use the following equation:

TotalHeight=17*(HeightDimension)

TotalHeight=17*(400cm+20cm+17cm)=17*(437cm)=7429cm

Now,

Converting from centimeters to meters, we have:

7429cm=7429cm*\frac{1m}{100cm}=74.29m

Hence, we have that the total height of the 17-story building is 74.29 meters.

Have a nice day!

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