7.1.2 5m 5m 3m 3m (1) Surface Area = (5 7 (4 7 + 2() + (3 7 m × m) + m × m) m × m) 7.1.3 = = 96 (3) m2 7.2 Length needed = = 6 320 m (4) 7.3 7.3.1 (2) Amount of water = 7.3.2 (2) = [16]
7.1.2 5m 5m 3m 3m (1) 7.1.3 Surface Area = (5 m × 7 m) + (4 m × 7 m) + 2() + (3 m × 7 m) = = 96 m2 (3) 7.2 Length needed = = 6 320 m (4) 7.3 7.3.1 (2) 7.3.2 Amount of water = = (2) [16]