IF the radiud of a sphere is increaded by 10% , how much will the surface area be increaded in ercentage?

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Job Solution Probashi Kallyan Bank অফিসার (জেনারেল) - 12.11.2021 গণিত
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A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of the hall is?

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A cylindrical rod of iron, whose height is equal to its radius, is melted and cast into spherical balls whose radius is half the radius of the rod . Find the number of balls.

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