Home
Class 9
MATHS
The inner diameter of a circular well is...

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) `

Text Solution

Verified by Experts

The correct Answer is:
(i) 110 `m^(2)`
(ii) Rs. 4400
Promotional Banner

Topper's Solved these Questions

  • SURFACE AREAS AND VOLUMES

    KUMAR PRAKASHAN|Exercise EXERCISE 13.3|8 Videos

  • SURFACE AREAS AND VOLUMES

    KUMAR PRAKASHAN|Exercise EXERCISE 13.4|9 Videos

  • SURFACE AREAS AND VOLUMES

    KUMAR PRAKASHAN|Exercise EXERCISE 13.1|8 Videos

  • STATISTICS

    KUMAR PRAKASHAN|Exercise MULTIPLE CHOICE QUESTIONS|12 Videos

  • TRIANGLES

    KUMAR PRAKASHAN|Exercise SUMS TO ENRICH REMEMBER|9 Videos

Similar Questions

Explore conceptually related problems

Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.

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 Total surface area.

The diameter of the base of a right circular cylinder is 28 cm and its height is 21 cm. Find its curved surface area.

Find : (i) the curved surface area and (ii) the total surface area of a hemisphere of radius 21 cm.

A cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of Rs. 12.50 per m^(2) .

The diameter and height of a cylindrical water tank are 2 m and 14 m respectively. Find the cost of painting its outer curved surface at the rate of Rs. 20 per m^(2) .

A right circular cylinder has base radius 14 cm and height 21 cm. Find its curved surface area.

The slant height and base diameter of a conical tomb are 25 m and 14 m respectively. Find the cost of whitewashing its curved surface at the rate of Rs. 210 per 100 m^(2) .

The diameter of a hollow hemispherical lid is 7 m. Find the cost of painting outer surfaces of 10 such lids at the rate of Rs. 20 per m^(2) .