Mathematics · Foundation

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Scale drawingsRunning
Bridge scaler. Drawn corridor length at 36 cm. Drawn length 36 cm, Scale × actual 18 cm. Currently drawn length is over by 18 cm.TUNINGREFERENCE 1 : 136 CMPROPORTIONAL SPAN
t = 0.0s

Drawn length

36cm

Scale × actual

18cm

36 cm

Bridge scaler. Drawn corridor length at 36 cm. Drawn length 36 cm, Scale × actual 18 cm. Currently drawn length is over by 18 cm.

What has to balancescale=drawingactualscale = \frac{drawing}{actual}

What is happening

You arrive at an evacuation floor plan being redrawn for a school wall.

The exits are drawn in the wrong place. The corridor is 45 m long, the plan uses 0.4 cm per metre, and the drawn length is wrong.