Math, asked by goyalseema1984, 4 months ago

Answer and get 6 points.
The inner diameter of a circular well is 3.5 m and it is 10 m deep. Find the cost of plastering the inner surface at ₹4 per sq. m.​

Answers

Answered by usjadhav2001
3

Step-by-step explanation:

(i)r= radius=

2

3.5

=1.75 , h= depth of the well=10m

⇒Curved surface area

=2πrh

=(2× 722 ×1.75×10)m

2

=110m

2

⇒(ii) Cost of plastering = Rs 40 per m

2

The cost of plastering the curved surface = Rs (110×40)= Rs 4400.

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