Use Pythagoras' theorem twice where a right-angled triangle is inscribed into another.

"Use Pythagoras' theorem twice where a right-angled triangle is inscribed into another."

[@tsunouchang412]

I get 15.0. Am I wrong?

[@paultomkinson2273]

No you are not wrong

[@Duodecilion]

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[@ShashinGeoD]

Be quiet

[@alexo8671]

hi