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Alex787 [66]
4 years ago
7

find the perimeter and diagonal of a square whose area is equal to the area of a rectangle whose length is 9m and breadth is 4m

Mathematics
1 answer:
aalyn [17]4 years ago
4 0
Area\ of\ a\ rectangle:A_{\fbox{ }}=9m\times4m=36m^2\\\\a-side\ of\ a\ square\\\\Area\ of\ a\ square:A_{\fbox{}}=a^2\\\\A_{\fbox{ }}=A_{\fbox{}}\Rightarrow a^2=36m^2\Rightarrow a=\sqrt{36m^2}\Rightarrow a=6m\\\\Perimeter\ of\ the\ square:P=4a\Rightarrow P=4\times6m=\boxed{24m}\\\\Diagonal\ of\ the\ square:d=a\sqrt2\Rightarrow d=\boxed{6\sqrt2\ m}
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PLZ HELP!!! QUESTION IS BELOW! EXPLAIN YOUR ANSWER :D
hjlf

Answer:

  • 172.12 in²

Step-by-step explanation:

Consider the figure as 3 parts: semicircle with radius of 4 in, rectangle with 7x9 in and rectangle 6x14 in.

<u>Area of semicircle:</u>

  • A = 1/2*πr² = 1/2*3..14*4² = 25.12 in²

<u>Area of rectangles:</u>

  • 7*9 = 63 in²
  • 6*14 = 84 in²

<u>Total area:</u>

  • 25.12 + 63 + 84 = 172.12 in²
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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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3 years ago
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Please write answers to the questions that are in the image.
marishachu [46]

Answer:

To find part A you need to find common denominator.

1/3 + 3/5=

5/15 + 9/15= 14/15

His mistake for a is that he didn't find the common denominator and that he just added the fraction as it is. So the corrected version would be 14/15.

To find part B you also need to find the least common denominator.

11/12-5/6=

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Step-by-step explanation:

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Answer:

113 miles

Step-by-step explanation:

given the 2 equations that define the cost c for each company based on the number of miles, m driven

Ace: c = 15 + 0.23m

Acme : c = 24 + 0.15m

we want to find m when c is the same

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m = 9/0.08

m = 112.5 ( ~=113 miles)

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