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A drawing of a warehouse has a scale of 2 inches equals 9 feet. A wall on the drawing is 7 inches.

How long will the wall be when built?

A) 28 feet
B) 31.5 feet
C) 36 feet
D) 42 feet

Answer :

The actual length of the wall when built is found by using the scale of 2 inches equals 9 feet; for a 7-inch drawing of the wall, the calculation yields an actual length of 31.5 feet. the correct answer is B

Scale and Measurement

To determine the actual length of the wall that will be built, we need to use the scale provided which is 2 inches equals 9 feet. If a wall on the drawing is 7 inches, we can set up a proportion to find the actual length. This can be done by dividing the length of the wall on the drawing by the scale to find out how many times the scale fits into the wall's length and then multiplying by the actual length of the scale. The steps are as follows:

Identify the scale: 2 inches = 9 feet.

Find how many times the scale fits into the length of the drawing: 7 inches / 2 inches = 3.5 times.

Multiply by the actual length of the scale: 3.5 times * 9 feet = 31.5 feet.

Therefore, the actual length of the wall when built will be 31.5 feet.

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