math.
posted by jen on .
A band poster that measures 90 cm by 40 cm is reduced by a scale factor of 1/6 so it can fit on a postcard.
a) What are the dimensions of the postcard image?
b) By what scale factor, to the nearest hundredth, was the area of the poster decreased in the reduction process?
please and thank you

90/6 x 40/6 = 15 x 6.3
1/6^2 = 1/36 = 0.03