Question

A rectangular tank has length 3m,2m and depth 1.5 what will be the cost of painting its walls form inside at the rate Rs3 per square metre
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Answer 1

LSA of cuboid: 2 h ( l + w )

                        = 2 x 1.5 ( 3 + 2 )

                        = 3 ( 5)

                        = 15 m²

Cost of painting per m²= 3 Rs

Cost of painting 15m²= 3 x 15 = 45 Rs.

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Answer 2

Step-by-step explanation:

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