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Mathematics 7 Online
OpenStudy (anonymous):

help

OpenStudy (anonymous):

im drawing my question

OpenStudy (anonymous):

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OpenStudy (anonymous):

formula for a circle using the diameter is \(A=\frac{\pi}{4} \times diameter^2\)

OpenStudy (anonymous):

or if you only know the formula for the are using the radius, you can use this method 1. find the radius: diameter/2 2. then substitute the radius here \(A=\pi r^2\)

OpenStudy (anonymous):

i looked on google and it says 48 but thats not a choice

OpenStudy (anonymous):

because it is not right :) try doing it yourself and i'll check if your method is right

OpenStudy (anonymous):

48 cannot be answer because pi is 3.14 and will give you some decimal places.

OpenStudy (anonymous):

I have no idea how to do this

OpenStudy (anonymous):

hmm.. do you know what a diameter of a circle is?

OpenStudy (anonymous):

area = (pi/4)(diameter squared) area = (3.14/4) x (24 x 24) do division and multiplication to get the answer

OpenStudy (anonymous):

Here it is @bbcream14 ...Again thankx even if you dont get it lol:))

OpenStudy (anonymous):

welcome and on area you have to times it

OpenStudy (anonymous):

i don't get it still my teacher don't tech me this all the time but she wants me to do a test on it

OpenStudy (anonymous):

Please see my answer above. The area is proportional to the square of the diameter.

OpenStudy (anonymous):

i got c cause i did 24*3.14= 75.36 cm

OpenStudy (anonymous):

OMG i am a pro at this

OpenStudy (anonymous):

is it C or am i wrong

OpenStudy (anonymous):

@Arielsweetlove01 are you still here

OpenStudy (anonymous):

It is C.

OpenStudy (anonymous):

thats what I got

OpenStudy (anonymous):

yeahhhh

OpenStudy (anonymous):

yeah let me know if its right

OpenStudy (anonymous):

do you know the answer for sure

OpenStudy (anonymous):

No. It is B. Approximate it with a square of sides = 24 cm which has an area of 24 x 24 = 576 cm, to give you a quick first estimate.

OpenStudy (anonymous):

well try douglous answer

OpenStudy (anonymous):

but I did pie r square

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