0.48 A tank 72 cm long, 60 cm high, 36 cm wide contains water to a depth of 18 cm. A metal block 48 cmby 36 cm by 15 cm is put into the tank and totally submerged. What is the rise in water-level ?t # ॥waਆਈ ਬੀ* * * # # ।1 % a # # ॥11 ਕੇ ।AREਰ ।% a ॥(A) 10 cm(C) 30 cm(B) 20 cm(D)40 cm