Missing side of similar rectangles
Find the scale factor between the matching sides, then use it on the other side.
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Two rectangles are similar. The small one is 5 cm by 12 cm. The large one has a side matching the first side that is of 20 cm. How long is the other side of the large rectangle, in cm?
Answer: 48
Two rectangles are similar. The small one is 6 cm by 11 cm. The large one has a side matching the first side that is of 12 cm. How long is the other side of the large rectangle, in cm?
Answer: 22
Two rectangles are similar. The small one is 2 cm by 4 cm. The large one has a side matching the first side that is of 10 cm. How long is the other side of the large rectangle, in cm?
Answer: 20
Tip: Find the scale factor between the matching sides, then use it on the other side.
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