 <translate> Jackie climbed 2 trees that were 1 / 2 * 1000 feet = 500 feet tall each. Jackie climbed a final tree that was 1000 + 200 feet = 1200 feet. In total, the 4 trees Jackie climbed were 1000 feet + 500 feet + 500 feet + 1200 feet = 3200 feet. The average height tree that Jackie climbed was 3200 feet / 4 trees = 800 feet tall.
Thus, the answer is 800. <yor> Jackie gun igi méjì tó ga tó ẹsẹ̀ bàtà márùn-ún ní ìlọ́po méjì. Jackie gun igi tó kẹ́yìn tó ga tó ẹgbẹ̀rún kan [1,000] + igba [200] ẹsẹ̀ = ẹgbẹ̀rún méjì [1,200] ẹsẹ̀. Lápapọ̀, àwọn igi mẹ́rin tí Jackie gùn jẹ́ ẹgbẹ̀rún kan [1,000] ẹsẹ̀ + ẹgbẹ̀rún márùn-ún [500] ẹsẹ̀ + ẹgbẹ̀rún márùn-ún [500] ẹsẹ̀ + ẹgbẹ̀rún méjì [1,200] ẹsẹ̀ = ẹgbẹ̀rún mẹ́ta ó lé igba [3,200] ẹsẹ̀. Igi tí Jackie gùn ní ìpíndọ́gba ga tó ẹgbẹ̀rún mẹ́ta ó lé igba ẹsẹ̀ bàtà [3,200] / igi mẹ́rin = ẹgbẹ̀rin ó lé ogójì ẹsẹ̀ bàtà [800]. Nítorí náà, ìdáhùn rẹ̀ ni ọgọ́rùn-ún mẹ́jọ. 