tan78=h60\tan 78 = \frac{h}{60}tan78=60h
h=60tan78h = 60 \tan 78h=60tan78
h=60×4.705=282.27 mh = 60 \times 4.705 = 282.27\,\text{m}h=60×4.705=282.27m
≈eq\approx \text{eq}≈eq 282m to the nearest whole number.
