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Salsk061 [2.6K]
3 years ago
7

Your sister is considering two different shapes for her garden. One is a square with side lengths of 3.5 meter, and the other is

a circle with a diameter of 4 meters.
A. find the area of the square

B. find the area of the circle

C. compare your answer from a and b. Which garden would give your sister the most space to plant?
Mathematics
1 answer:
Bess [88]3 years ago
3 0
Hello! I can help you with this!

A. Okay. So, to find the area of the square all you have to do is the number square, or multiply the number by itself, in this case. 3.5. 3.5^2 is 12.25. The area of the square is 12.25 square meters large.

B. To find the area of the circle, you do pi*r^2. Radius is half the the diameter. Half of 4 is 2. 2^2 is 4. To multiply by pi, we can just do it as 3.14. 4 * 3.14 is 12.56. The circle is 12.56 square meters large.

C. The circle garden would give her the most space to plant, because 12.56 is larger than 12.25 by 0.31. The circle garden 0.31 square meters larger than the square garden.
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Answers:

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=================================================

Explanation:

x = rate of the slower train

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Using that same formula, the faster train travels 5(x+20) = 5x+100 kilometers in 5 hours.

The two distances must add to 1490 if we want the trains to pass by each other. Assume that the trains are traveling on parallel side-by-side tracks.

--------------------------

So,

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The slower train moves at a rate of 139 km per hour.

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The faster train moves at a speed of 159 km per hour.

--------------------------

Check:

The slower train travels 139 kph and travels for 5 hours, so it covers a distance of 139*5 = 695 km

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