Unit 11: Volume and Surface Area Homework 1: Area of Plane Figures- Find Area.

Mathematics

1 answer:

uysha [10]2 years ago

5 0

Answer:

4. 432 cm^2/2 = 216 cm^2

6. 309.76 mm^2

8. pi * 22^2 = 484pi (or, approximately 1,519.76) in^2

484/2 = 242pi or 759.88 in^2.

10. 297.84 in^2/2 = 148.92 in^2

Step-by-step explanation:

To find the area of a triangle, you take the base and multiply by the height, and then divide by 2. Hence giving me the answers I obtained in #4 and #10.

A square is equal on all sides, so you would just square the measurement of the one side.

To find the area of a circle, you would do pi times the radius^2. Since this is a semicircle, you actually should divide the number you got by 2. (Which is why I did so up above).

I hope this helps!

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romanna [79]

Answer:

$\large \boxed{27 \, \%} }$

Step-by-step explanation:

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3 years ago

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Tpy6a [65]

Answer:

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Step-by-step explanation:

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* If the number is negative, you either go down or to the right. If the number is positive, you go up and to the left.

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