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# In the scale drawing of the rectangular dining room shown above, the

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Math Expert
Joined: 02 Sep 2009
Posts: 61484
In the scale drawing of the rectangular dining room shown above, the  [#permalink]

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26 Sep 2017, 22:33
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Question Stats:

85% (00:21) correct 15% (00:12) wrong based on 22 sessions

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In the scale drawing of the rectangular dining room shown above, the scale used was 5 cm = 1 meter. What is the actual area, in square meters, of the room?

(A) 10
(B) 12
(C) 24
(D) 120
(E) 250

Attachment:

2017-09-27_1016_003.png [ 3.29 KiB | Viewed 894 times ]

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In the scale drawing of the rectangular dining room shown above, the  [#permalink]

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27 Sep 2017, 17:29
Bunuel wrote:

In the scale drawing of the rectangular dining room shown above, the scale used was 5 cm = 1 meter. What is the actual area, in square meters, of the room?

(A) 10
(B) 12
(C) 24
(D) 120
(E) 250

Attachment:
2017-09-27_1016_003.png

$$\frac{scale}{actual} =\frac{5cm}{1m}$$

Actual area, in square meters, of the room = L x W

Length: $$\frac{5cm}{1m} =\frac{30cm}{Lm}$$
L = $$6m$$

Width: $$\frac{5cm}{1m} =\frac{20cm}{Wm}$$
W $$= 4m$$

Actual area in square meters = L x W = 6 x 4 = 24

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In the scale drawing of the rectangular dining room shown above, the   [#permalink] 27 Sep 2017, 17:29
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