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iren [92.7K]
3 years ago
8

Brianne's town is building a pool based on a scale drawing that is 20 centimeters by 10 centimeters and uses the scale 1 cm:250

cm. What is the area of the pool in square meters? Enter the area of the pool in the box.
Mathematics
1 answer:
kiruha [24]3 years ago
4 0

Answer:

A=1250m^2

Step-by-step explanation:

From the question we are told that

Dimension of drawing

20 centimetres by 10 centimetres

Scale of drawing

1 cm:250 cm

Generally the the Main dimension of the pool is mathematically given as

L=length\ of\ scaled\ pool*250 cm\\B=length\ of\ scaled\ pool*250 cm\\L=20*250=5000 cm=50m\\B=10*250=2500 cm=25m

Therefore Area Aof main pool is mathematically given as

A=50m*25m=1250 m^2

A=1250m^2

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  • Problem 1)  40 degrees
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===============================================

Explanation:

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For problem 1, the arc measure is 80 degrees, so half that is 40. This is the measure of the unknown inscribed angle.

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For problem 3, we need to determine angle DEP. But first, we'll need Thales Theorem which is a special case of the inscribed angle theorem. This theorem states that if you have a semicircle, then any inscribed angle will always be 90 degrees. This is a handy way to form 90 degree angles if all you have is a compass and straightedge.

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