A plan of a building is drawn on the scale of 1:200.

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a.) The width of the building is 15 m, how wide is the plan of the building?
Give your answer in centimetres.
b.) The length of the building drawn in the plan is 12 cm, how long the actual length oh the building?
Give your answer in metres.

A plan of a building is drawn on the scale of 1:200.

Jawaban:

a. 7½cm

b. 24m

Penjelasan dengan langkah-langkah:

The scale for this plan is 1 : 200.

This means that 1 cm on the plan represents 200 cm (or 2 m) in real life.

a. actual width = 15m = 1500cm

width on a plan =

 {1500cm} times ({1 div 200} ) \ = 1500cm times frac{1}{200} =7 frac{1}{2} cm

b. length on a plan = 12 cm = 0,12m

actual length =

 {0.12m} div ({1 div 200} ) \ = 0.12m times {200} =24m