D11, Surface area and volumes, class 10 math pyq 2019-2024, questio, analysis and pattern

01:12 The difference between the outer and inner radii of a hollow right circular cylinder of length 14 cm is 1 cm. If the volume of the metal used in making the cylinder is 176 cm', find the outer and inner radii of the cylinder.

06:40 From a solid cylinder of height 30 cm and radius 7 cm, a conical cavity of height 24 cm and same radius is hollowed out. Find the total surface area of the remaining solid.

11:10 Water in a canal, 8 m wide and 6 m deep, is flowing with a speed of 12 km/hour. How much area will it irrigate in one hour, if 0-05 m of standing water is required ?

Surface area and volume chapters questions are easy to solve only one factor is to be taken care of that is calculation mistakes.
For class 10 board exam this chapter has weightage of 5 marks.

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