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221. The length, breadth and height of a cuboid are 15 cm, 10 cm and 8 cm. Find its volume.

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222. The total surface area of a cube is 150 cm². It volume is

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223. A tank is 6 m x 5 m x 4 m. Its

2 over 3

rd portion is filled with water. The volume of water is

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224. The base radius and height of a cylinder are 7 cm and 14 cm respectively. Its total surface area is

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225. The curved surface area of a right circular cylinder is 528 cm² and its radius is 6 cm. The height of the cylinder is

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straight pi

x 12 x 12 x 700 cm³.

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227. The radius of a sphere is 3.2 cm. Its surface area is

$4 over 3 straight pi left parenthesis 3.2 right parenthesis squared space cm cubed$
4 $straight pi$ (3.2)³ cm³
$4 over 3 straight pi left parenthesis 3.2 right parenthesis squared space cm squared$
$4 over 3 straight pi left parenthesis 3.2 right parenthesis squared space cm squared$

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228. The radius of a sphere is 3 cm. It is melted and recast into small spheres of radii 1 cm each. Find the number of small spheres.

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229. The length, breadth and height of a cuboidal tank are 4 m, 2 m and 0.75 m respectively. How many litres of water can be filled in this tank?

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230. A cuboidal carton measures 60 x 30 x 30 cm³. How many packets of 15 x 6 x 4 cm³ can be put in this carton?

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