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Mathematics 18 Online
OpenStudy (anonymous):

PLEASE HELP ME ANSWER THIS QUESTION WITH THIS PICTURE! -PICTURE IS UNDER THIS POST-

OpenStudy (anonymous):

OpenStudy (anonymous):

Enough already with the caps....

OpenStudy (anonymous):

Find area of the circles (combined), subtract from area of the square

OpenStudy (anonymous):

36*24 the rectangle. 24=2circle diameters, 12 each radius. Area of circle π*radius*radius. Multiply by six. Subtract from rectangle

OpenStudy (anonymous):

12 each diameter,6 each radius sorry

OpenStudy (anonymous):

36X24=864...

OpenStudy (anonymous):

area of a circle=radius^2 pi the two of the circle's diameters equal 24, 3 of the diameters equal 36. Divide 24 by two (or 36 by 3) and u get the diameter is 12

OpenStudy (anonymous):

so the radius is 6

OpenStudy (chaise):

Area of rectangle: lxw = 864 Area of a circle = piR^2 Area of 6 circles with same diametre = 6piR^2 6pix6^2 6^2 x 6pi = roughly 70. 864 - 70 = 750. Your answer is C. Only logical, you can use exact math if you really want.

OpenStudy (chaise):

my answer is wrng. wait

OpenStudy (anonymous):

6^2 *pi=113.097 (approximately) multiply that by 6 678.584 (approximately)

OpenStudy (anonymous):

so would it be either c or d?

OpenStudy (chaise):

probs b 864- 750 = 185

OpenStudy (anonymous):

The area of the square is 36*24 864 subtract 678.584 from that

OpenStudy (anonymous):

answer: 185.416

OpenStudy (anonymous):

is 185 an answer choice?

OpenStudy (anonymous):

yes its b

OpenStudy (anonymous):

wait. my answer was 185.41; b is 185.76

OpenStudy (anonymous):

there's a discrepancy :(

OpenStudy (anonymous):

do you see the answer choices

OpenStudy (chaise):

You won't get an exact answer if you used 3.14 insteaad of pi. there is room for error if you used 3.14

OpenStudy (anonymous):

I used pi

OpenStudy (anonymous):

ah, well. no big deal

OpenStudy (anonymous):

so which is it?

OpenStudy (anonymous):

its 36*24-(6(6^2 *3.14))=185.76

OpenStudy (anonymous):

thanx!

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