Question

A house plan shows a scale of 1:40. If the rectangular lounge room of the house is to measure 4.2 metres by 6.2 metres, what will the area of the lounge room be on the plan in square metres

Answer 1

I assume the room is a rectangle with length 6.2 m and width 4.2 m.
How do you find the area of a rectangle?

Answer 2

6.2 x 4.2