A room plan uses scale 1:100. A sofa is 2.4 metres long in reality. How long is it on the plan? Enter the number of centimetres.

Explicación

The real length is 240 centimetres, and dividing by 100 gives a plan length of 2.4 centimetres. Dividing 2.4 metres directly by 100 and then labelling the result as centimetres would create a hundredfold unit error.