The length breadth and height of a rectangular box is 30cm 25cm and 18 cm.find the cost of painting the outer part of box at Rs 12 per meter sqare.
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Answered by
6
length= 30cm
breadth = 25cm
height=18cm
Curved surface area of cuboid = 2(l+b)h
= 2(30+25)18
= 2into 55into 18
= 1980 cm
cost of painting= 1980into 12
=23760
breadth = 25cm
height=18cm
Curved surface area of cuboid = 2(l+b)h
= 2(30+25)18
= 2into 55into 18
= 1980 cm
cost of painting= 1980into 12
=23760
Answered by
0
Answer:
Rs 46080
Step-by-step explanation:
Total surface area = 2( lb + bh + lh )
2(30×25+25×18+28×30)
= 2( 750+ 450+ 720)
= 2× 1920
= 3840 cm ^2
Cost of painting = Rs 12× 3840
= Rs 46080
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