Question
Find the perimeter:



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| $L$ | $TTh$ | $Th$ | $H$ | $T$ | $O$ | |
| $6$ | $6$ | $0$ | $5$ | $3$ | $1$ | |
| $−$ | $7$ | $0$ | $9$ | $8$ | $1$ | |
| $x$ | $50$ | $5$ |
| $20$ | ||
| $2$ |
| $L$ | $TTh$ | $Th$ | $H$ | $T$ | $O$ | |
| $4$ | $0$ | $0$ | $8$ | $0$ | $0$ | |
| $−$ | $2$ | $0$ | $0$ | $6$ | $0$ | $0$ |