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original size:
base: 4 in. by 5 in.
height: 3 in.
all sides doubled:
base: & in. by 10 in.
height: 6 in.
all sides tripled:
base: 12 in. by 15 in.
height: 9 in.
4 in. x 5 in.
= 20 sq in.
18 in. x 3 in.
2(20 sq in.) +