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# Solution - The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find (i) Its inner curved surface area, (ii) The cost of plastering this curved surface at the rate of Rs 40 per m^2. - CBSE Class 9 - Mathematics

ConceptSurface Area of a Right Circular Cylinder

#### Question

The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find

(i) Its inner curved surface area,

(ii) The cost of plastering this curved surface at the rate of Rs 40 per m2.

["Assume "pi=22/7]

#### Solution

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#### APPEARS IN

NCERT Mathematics Textbook for Class 9
Chapter 13: Surface Area and Volumes
Q: 7 | Page no. 217

#### Reference Material

Solution for question: The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find (i) Its inner curved surface area, (ii) The cost of plastering this curved surface at the rate of Rs 40 per m^2. concept: Surface Area of a Right Circular Cylinder. For the course CBSE
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