Mathematics for IGCSE & O level - Ratio And Proportion (Section 5 - No. 47)
A model of a building is built with a scale of 1:100. If the model is 25 cm tall, how tall is the actual building in meters?
0.25 m
2.5 m
25 m
250 m
คำอธิบาย
25 cm * 100 = 2500 cm = 25 m