Sally measures the angle of elevation to the top of a tree from a point $20$m away to be 43^\circ . If the height of the tree is H m, find the value of H.

Round your answer to the nearest whole number.
Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
Question: Sally measures the angle of elevation to the top of a tree from a point $20$m away to be 43^\circ . If the height of the tree is H m, find the value of H.

Round your answer to the nearest whole number.
Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
Question: Sally measures the angle of elevation to the top of a tree from a point $20$m away to be 43^\circ . If the height of the tree is H m, find the value of H.

Round your answer to the nearest whole number.