A cylindrical vessel open at the top has a diameter of 21 cm and height 16 cm . Find the cost of tin planting it on the inside at the rate of rs 10
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Answer:
Diameter=21cm
Radius= 21÷2=10.5
Height= 16cm(given)
Total surface area=Curved surface area + Area of base(bottom part only)
=2×pie×r×h+pie×square
=2×22/7×10.5×16 +22/7×10.5×10.5
=1401.5cm2
The cost of tin plating it on the inside
1401.5/100×10
140.15
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