A blackboard is 2.6 m in length and 150 cm in breadth. find the cost of painting it at the rate of rs 1.20 per sq.m
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l = 2.6
b = 150 cm = 150 / 100 = 1.5 m
area = l × b
2.6 × 1.5 = 3.9
3.9 × 1.2 = 4.68
b = 150 cm = 150 / 100 = 1.5 m
area = l × b
2.6 × 1.5 = 3.9
3.9 × 1.2 = 4.68
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