physics
posted by Anonymous on .
On an aerial photograph of a triangular piece of land the lengths of the three sides are 4cm, 5cm and 7cm. If the shortest side of the actual piece of land is 360 meters, find the lengths of the other sides

scale is 4cm:360m
so, 5cm = (5/4)4cm : (5/4)360m = 450m
and 7cm = (7/4)4cm : (7/4)360m = 630m