The inner diameter of a circular well is3.5m. It is 10mdeep. Find its inner curved surface area.
As we know the well is a cylindrical shape
Diameter=Radius2=3.52
Its inner curved surface area =2πrh
=2×227×3.52×10=110m2
Hence, inner curved surface area of well is 110m2.
The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find :
(i) inner curved surface area.
(ii) the cost of plastering this curved surface at the rate of Rs. 40 per m2.
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.