MO-Z5-3-66 tiles

The picture shows square tiles with a side of 10 dm, composed of four identical small rectangles and squares. The circumference of a small square is five times smaller than the circumference of the entire tile. Determine the dimensions of the rectangle.

Correct answer:

x =  40 cm
y =  60 cm

Step-by-step explanation:

a=10 10=100 b=a/5=100/5=20 a=2x+b x=(ab)/2=(10020)/2=40 cm
a=x+y y=ax=10040=60 cm

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