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Answer :

Frixxyygo
X=2 if you count the number of squares on each side of the triangle you get 5 on the first one so do that same it’s 2
Dilz27go
X= 2.5 cm
As the bottom line of the yellow triangle adds up to 8 squares and the bottom line of the blue triangle adds up to4 squares meaning it is an enlargement of 2. So 5 divided by 2 is 2.5 cm.

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