. I stood 420 m away from the tallest building in Singapore. I held a piece of wood 40cm long at arms length, 60 cm away from my eye. The piece of wood, held vertically, just blocked the building from my view. Use similar triangles to calculate the height, h meters of the building.


  1. ¯\_(ツ)_/¯  

    悲しいことに、私は本当に気にしません。 別の答えを探してみてくださいまたはちょうど..あなたが知っている..それを自分でやってください… ???

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