EXAMPLE 9. An open box is made of wood 3 cm thick. Its external length – InterviewSolution

1.	EXAMPLE 9. An open box is made of wood 3 cm thick. Its external length, breadth aheight are 1.48 m, 1.16 m and 8.3 dm. Find the cost of painting the inner surface at thate of t 50 per square metre.[CBSE SP 2
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