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Pavel [41]
3 years ago
5

Please answer the 3 questions (the first one I accidentally tapped)

Mathematics
2 answers:
choli [55]3 years ago
8 0

1,347 = 1.347 x 10^3

2,156 = 2.156 x 10^3

9,200,000 = 9.2 x 10^6

Alisiya [41]3 years ago
7 0

5.  1.347

6.  2.156 x 10(3)

7.  9.2 x 10(6)

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The area of a circle is 1441 m2.<br> What is the diameter of the circle?
gregori [183]

Hey there! I'm happy to help!

The area of a circle is the radius squared multiplied by pi (we will use 3.14). We already have the area, so we will go backwards.

1441÷3.14≈458.9171975

We find the square root.

√458.9≈21.42235275

Now we have our approximate radius. The diameter is twice the radius.

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vladimir2022 [97]
A^2+b^2= 15^2

b=a-3

Use substitution
a^2+(a-3)^2= 225
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2a^2-6a+216=0

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A is -9 or 12, but since an object can't have a negative length or width, a must be 12.

Plug this value of a in.
b=(12)-3
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Final answer: Length=9, width=12
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Step-by-step explanation:

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