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`

The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find The cost of plastering this curved surface at the rate of Rs. 40 per m^(2) .

Find the cost of fencing a square park of side 250 m at the rate of Rs. 20 per meter.

A right circular cylinder has radius 3.5 cm and height 14 cm. Find curved surface area.

The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface?

A metal pipe is 77 cm .long .The inner diameter of a cross section is 4 cm. the outer diameter being 4.4 cm .Find its (i) inner curved surface area outer curved surface area.

A cylindrical pillar has a diameter of 56 cm and is of 35 m high. There are 16 pillars around the building. Find the cost of painting the curved surface area of all the pillars at the rate of ₹5.50 per 1 m^2

A cylindrical piller has a diameter of 56 cm and is of 35 m high. There are 16 pillars around the building. Find the cost of painting the curved surface area of all the pillars at the rate of rupes 5.50 per 1m^(2)

The volume of a hemi-sphere is 2425 1/2 cm^3 . Find its curved surface area. (use pi = 22/7)

The dimensions of a rectangular field are 90 m and 60 m. Two roads are constructed such that they cut each other at the centre of the field and are parallel to its sides. If the width of each road is 3 m, find (i) The area covered by the roads. (ii) The cost of constructing the roads at the rate of 110 per m^(2) .