By adding all left hand sides of the problem = all right hand sides of the problem
its length + its width= 16 cm
its width + its height= 14 cm
its height+ its length= 18 cm
2L + 2 W + 2H = 48
2(L + W + H ) = 48
L + W + H = 24
BY REPLACE ( L + W ) = 16
16 + H = 24
H = 24-16 =8
BY REPLACE (W + H ) = 14
14 + L = 24
L = 24-14 =10
BY REPLACE (L + H ) = 18
18 + W = 24
W = 24-18 =6
VOLUME = L × W × H= 10 ´6´ 8 =480 cm3
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