Draw a 3 by 7 square. Find its area , show your reasoning

Mathematics

1 answer:

Anna007 [38]3 years ago

5 0

Well, it wouldn'r be a square, but a rectangle.
3*7=21
The area of the rectangle is 21u²

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Ad libitum [116K]

Answer:

The correct options is A.

Step-by-step explanation:

The each diagonal of an irregular parallelogram divides the parallelogram in two equal and congruent parts. The diagonal bisects each other.

It means, if a irregular parallelogram rotates 180° about the midpoint of its diagonal, then the image of the parallelogram coincide with its preimage during the rotation.

If a irregular parallelogram rotates 360° about the midpoint of its diagonal, then the image of the parallelogram coincide 2 times with its preimage during the rotation.

Therefore the correct option is A.

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Use Pythogarean theorem to find c:
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Same thing with g:
${e}^{2} + {f}^{2} = {g}^{2} \\ \\ {g}^{2} = {4}^{2} + {4}^{2} \\ \\ = 16 + 16 \\ \\ = 32 \\ \\ g = \sqrt{32} = 4 \sqrt{2} = 5.66$
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4 years ago

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4 years ago

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natima [27]

Answer:

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Step-by-step explanation:

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Hope I could help.

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