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On a floor plan drawn at a scale of 1:100, the area of a rectangular room is 30 cm^2. What is the actual area of the room?
A. 30,000 cm^2
B. 3,000 cm^2
C. 3,000 m^2
D. 30 m^2
After playing with precalculus for so long, this word problem should be a walk in the park but it is not. I will have to guess my way through.
I think 1:100 is a ratio and if so, then a fraction.
Let A = actual area of room
30 = (1/100)A
30/(1/100) = A
30(100) = A
3,000 cm^2 = A
I say the answer is B.
A. 30,000 cm^2
B. 3,000 cm^2
C. 3,000 m^2
D. 30 m^2
After playing with precalculus for so long, this word problem should be a walk in the park but it is not. I will have to guess my way through.
I think 1:100 is a ratio and if so, then a fraction.
Let A = actual area of room
30 = (1/100)A
30/(1/100) = A
30(100) = A
3,000 cm^2 = A
I say the answer is B.
