Question

Find the cost of polishing the curved surface area of a right circular cylinder whose diameter is 7 cm and height is 12 centimetre at 100 rupees

Answer 1

Hope this will be helpful.

Answer 2

Total cost of polishing would be Rs. 26400.

Step-by-step explanation:

Since we have given that

Diameter = 7 cm

Height = 12 cm

So, Curved surface area would be

$2\pi rh\\\\=2\times \dfrac{22}{7}\times \dfrac{7}{2}\times 12\\\\=2\times 11\times 12\\\\=264\ cm^2$

Cost of per sq. m = Rs. 100

So, Total cost of polishing would be

$100\times 264\\\\=Rs.\ 26400$

Hence, total cost of polishing would be Rs. 26400.

# learn more:

The diameter of a right circular cylinder is 7 cm and its height is 12 cm find the cost of polishing at its

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