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Answer :

The answer is

20

Explanation: since they are similar, 10 x 4 = 40 and 40 divided by 2 would equal 20.
2 x 20 = 40
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Answer:

Solution given:

Since rectangle ABCD is similar rectangle RSTU .Its corresponding side will be proportional.

so

length AB and ST

breadth AD and SR

[tex]\frac{AB}{AD}=\frac{ST}{SR}[/tex]

[tex]\frac{10}{4}={x}{2}[/tex]

x=[tex]\frac{10*2}{4}=5[/tex]

:.value of x is 5

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