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Mathematics 8 Online
OpenStudy (anonymous):

Which figures can be used to find the area of the composite figure? Choose exactly two answers that are correct.

OpenStudy (anonymous):

A. a semicircle with an area of m2 B. a semicircle with an area of m2 C. a rectangle with an area of 33 m2 D. a rectangle with an area of 66 m2

OpenStudy (anonymous):

@r_josh10

OpenStudy (phi):

do you know the formula for the area of a rectangle?

OpenStudy (anonymous):

No I don't

OpenStudy (r_josh10):

iwhat is the area of a and b, you left it blank A= L*W ^square formula

OpenStudy (anonymous):

Okay I suck at this -_-

OpenStudy (anonymous):

A. a semicircle with an area of 4.5pi m2

OpenStudy (anonymous):

a semicircle with an area of 18pi m2

OpenStudy (r_josh10):

what about B?

OpenStudy (anonymous):

The second one is B

OpenStudy (anonymous):

Thanks! XD

OpenStudy (anonymous):

How do I medal?

OpenStudy (anonymous):

The diameter of the larger circle is 20.4 cm. The diameter of the smaller circle is 10.8 cm. What is the approximate area of the shaded region? A. 326.7 cm² B. 289.4 cm² C. 235.1 cm² D. 72.3 cm²

OpenStudy (anonymous):

OpenStudy (anonymous):

@r_josh10

OpenStudy (r_josh10):

Yep its C. 235.1

OpenStudy (anonymous):

Thanks again!

OpenStudy (anonymous):

last question josh

OpenStudy (anonymous):

A circular piece of fabric has a radius of 1.2 feet. The fabric sells for $5.40 per square foot. What is the total cost of the circular piece of fabric? A. $6.48 B. $20.35 C. $24.42 D. $40.69

OpenStudy (anonymous):

@r_josh10

OpenStudy (anonymous):

nvm josh its $40.69 isn't it?

OpenStudy (r_josh10):

c maybe not sure.

OpenStudy (anonymous):

@RareTalentAstra

OpenStudy (r_josh10):

@Data_LG2 @iGreen @inowalst @phi

OpenStudy (anonymous):

What do you think Astra??? (The last question)

OpenStudy (igreen):

@animallover317 You should post 1 question per post..close this.

OpenStudy (anonymous):

-_- eh, this is easier. Astra and Josh already here

OpenStudy (anonymous):

Astra?

OpenStudy (anonymous):

hold on

OpenStudy (anonymous):

kk

OpenStudy (anonymous):

i think its c but not sure i havent done thin in a while

OpenStudy (anonymous):

Okay thanks

OpenStudy (anonymous):

Yup c is it

OpenStudy (anonymous):

why I was summoned if someone is already providing direct answers? i don't get it .-. i'm noob to this, can any of you explain how did you get the answers? i would really want to learn how to do this...like for example on the first one, how did you end up with the answer? i'm confused, please explain it . thanks in advance!

OpenStudy (anonymous):

Yup c is it

OpenStudy (anonymous):

but how it become C doe? can you show me how?

OpenStudy (anonymous):

what did you do to get C? .-.

OpenStudy (anonymous):

Yup c is it

OpenStudy (anonymous):

I do not know how they got c

OpenStudy (anonymous):

so how did you know whether that's right or wrong? .-.

OpenStudy (anonymous):

and the questions says "Choose exactly TWO answers that are correct."

OpenStudy (anonymous):

I knew because the assessment said it was correct

OpenStudy (anonymous):

wait but that was only one

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

if in case you need something to review for your future exam ^_^ goodluck! have a nice day!

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