Question

13. A Circular frame of diameter 16 cm is to be polished @ Rs 5/cm
Find the cost of
polishing the frame?​

Answer 1

Answer:

16*5=80

hope it will help you

Answer 2

The cost of polishing the frame is Rs. 25.14.

Step-by-step explanation:

Since we have given that

Diameter of circular frame = 16 cm

Radius of circular frame = 8 cm

So, Perimeter of circular frame is given by

$2\pi r\\\\=2\times \dfrac{22}{7}\times 8\\\\=\dfrac{352}{7}\\\\=50.29\ cm$

Cost of polishing the frame = Rs. 5/cm

So, Total cost of polishing the frame is given by

$50.29\times 5\\\\=Rs.\ 25.14$

Hence, the cost of polishing the frame is Rs. 25.14.

# learn more:

Find the cost of polishing circular table top of diameter 1.2mts .if the rate of polishing is 13/msq

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