Mathematics
A model of an aeroplane is made to a scale of 1 : 400. Calculate :
(i) the length, in cm of the model; if the length of the aeroplane is 40 m.
(ii) the length, in m, of the aeroplane, if length of its model is 16 cm.
Related Questions
A triangle ABC has been enlarged by scale factor m = 2.5 to the triangle A' B' C'. Calculate :
(i) the length of AB, if A'B' = 6 cm.
(ii) the length of C'A' if CA = 4 cm.
A triangle LMN has been reduced by scale factor 0.8 to the triangle L'M'N'. Calculate:
(i) the length of M'N', if MN = 8 cm.
(ii) the length of LM, if L'M' = 5.4 cm.
The dimensions of the model of a multistorey building are 1.2 m × 75 cm × 2 m. If the scale factor is 1 : 30; find the actual dimensions of the building.
On a map drawn to scale of 1 : 2,50,000; a triangular plot of land has the following measurements : AB = 3 cm, BC = 4 cm and angle ABC = 90°.
Calculate :
(i) the actual length of AB and BC in km
(ii) the area of the plot in sq. km.