Question

please find the value of qr
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Answer 1

tell me the formula, i will try

Answer 2

Answer:

42CM

Step-by-step explanation:

USing pythogrus' theorem sice we realise that there are two fifures there ie a rigth angled triangle

the length for point OR=21 Where O is an assumed point in order for us to get a  triangle out of the figure .

therefore QO+OR=QR

21CM+21CM=42CM