Tiles

The tile has the shape of a square with a side of 15 cm. What dimensions can a rectangle composed of 90 of these tiles have so that no tile remains?

Correct result:

a1 =  15 cm
b1 =  1350 cm

Solution:

a0=15 cm x1=1,y1=90 x2=2,y2=45 x3=3,y3=30 x4=5,y4=18 x5=6,y5=15 x6=9,y6=10  a1=a0⋅ 1=15⋅ 1=15 cm
b1=a0⋅ 90=15⋅ 90=1350 cm

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