( c) In the follo wing figure, AE = g cm, BE = 3 cm and CE = 4 cm. Find the l ength of DE • 12 . ( a) b) ( C B E A D A bus leaves town A (3 ° S, 39 ° E) at a constant speed of 40 km/h. Ho w many hours will the bus take to reach town B(12 ° S, 39 ° E)? Use Jr = 3.14 and radius of the E arth, R = 6 ,400 km . A box has a rectangular base UVXY with plane PQRS be ing ve rtic ally above UVXY as s hown in the following figure. Page 5 of 6