Question

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​

Answer 1

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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