A wooden rectangular plank has dimensions 12m and 6 m. Three circular portions are cut from the plank having diameters 2m, 2m and 1m.How much area of the plank remains?
A.(288-9π)/3 sq.m.
B.(288-3π)/4 sq.m.
C.(72-9π)/4 sq.m.
D.(288-9π)/4 sq.m.
Answer: D
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