181.A bag of grains contains 2.8 m3 of grain. How many bags of grain are needed to fill a right circular cylindrical drum of radius 4.2 m and height 5 m?
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182.A cylindrical pipe open at both ends is made of iron sheet which is 2 cm thick. If the outer diameter is 16 cm and its length is 100 cm, find how many cubic centimeters of iron has been used in making the tube?
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183.How many cylindrical glasses of 3 cm base radius and height 8 cm can be refilled from a cylindrical vessel of base radius 15 cm which is filled upto a height of 32 cm?
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184.A cylindrical container of base radius 28 cm contains sufficient water to submerge a rectangular block of iron with dimensions 32 cm x 22 cm x 14 cm. Find the rise in the level of water, when the block is completely submerged.
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185.
The volume of a right circular cylinder is 3850 cm3. Find its height if its, diameter is 14 cm.
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186.The pillars of a temple are cylindrically shaped. If each pillar has a circular base of radius 20 cm and height 10 m, how much concrete mixture would be required to build 14 such pillars?
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187.The total surface area of a cylinder of radius 7 cm is 880 m2. Find the height and the volume of the cylinder.
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188.Find the volume of the right circular cone with (i) radius 6 cm, height 7 cm
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189.Find the volume of the right circular cone with (ii) radius 3.5 cm, height 12 cm.
Short Answer Type
h2 = 625 - 49
h2 = 576
h = 
h = 24 cm
Capacity = 
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