SOLUTION: Hi i'm not sure if this problem is an equation : Carol is re-finishing her kitchen floor. The dimensions of her kitchen floor are shown below. (go onto http://www.mdk12.o

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Question 133923: Hi i'm not sure if this problem is an equation :


Carol is re-finishing her kitchen floor. The dimensions of her kitchen floor are shown below.
(go onto http://www.mdk12.org/assessments/k_8/sample_grade8_math.html to see the scale) (please)(problem number 6)




What is the area, in square feet, of Carol's kitchen floor? Round your answer to the nearest whole number. Use = 3.14.
a.89 square feet
b.326 square feet
c.349 square feet
d.350 square feet
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
Looking at the figure, you have:

A 12 X 20 rectangle: 12+%2A+20+=+240ft%5E2
A 6 X 6 square: 6%2A6=36ft%5E2
A triangle with a base of 8 and height of 6: %286%2A8%29%2F2=24ft%5E2
Half of a circle of radius 4: %28pi%2A4%5E2%29%2F2=%28pi%2A16%292=8%2Api=25.12 (using 3.14 as an approximation of pi).

240%2B36%2B24%2B25.12=325.12ft%5E2, rounded to the nearest square foot per the problem instructions and the notion that a calculated measurement should never be expressed more precisely than the least precise given measurement, is 325ft%5E2.

This result is not one of the available answers, however the general instructions for multiple choice examinations or assessments include direction to select "the most correct answer" Given that, Answer B, 326 square feet, is much closer to correct than any of the others and therefore should be the answer selected.