591.A bucket made of tin sheet of height 20 cm has its upper and lower ends of radius 24 cm and 8cm respectively. Find the cost of bucket full of milk at the rate of Rs. 5 per litre and the cost of tin sheet used is Rs. 1.00 per 100 cm2.
Solution not provided.
Ans. Rs. 87.16, Rs. 27.76
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592.A tent is made in the film of conical frustum capped by a cone. The radii of the base and top of frustum is 5 cm and height of tent 7 cm. Find the length of the canvas 120cm wide required for the tent.
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593.The perimeters of the ends of a frustum of a right circular cone are 44 cm and 33 cm. If the height of the frustum be 16 cm, find it volume, the slant surface and the total surface.
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594.A lamp shade made of a special chart paper in the form of frustums of a cone open at both ends. The radii of its ends are 16 cm. Find the cost of the paper used if one square meter of paper costs Rs. 0.70.
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595.A bucket made up of a metal sheet is in the form of a frustum of a cone of height 16cm with radii of its lower and upper ends 8 cm and 20 cm respectively. Find the cost of the bucket if the cost of metal sheet used is 100 cm. [Use = 3.14)
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596.A bucket made up of a metal sheet is in the form of frustum of a cone. Its depth is 24cm and the diameters of the top and bottom are 30 cm and 10 cm respectively. Find the cost of milk which can completely fill the bucket at the rate of Rs. 20 per litre and the cost of metal sheet used if it costs Rs. 10 per 100 cm2. [Use = 3.14]
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597.A bucket is in the form of a frustum of a cone. Its depth is 15cm and the diameters of the top and the bottom are 56 cm and 42 cm respectively. Find how many litres of water can the bucket hold. [Take = 22/7]
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598.
A cone of radius 10 cm is divided into two parts by drawing a plane through the mid-point of its axis, parallel to its base. Compare the volumes of the two parts.
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599.An open metallic bucket is in the shape of a frustum of a cone mounted on hollow cylindrical base made of metalic sheet. It the diameters of the two circular ends of the bucket are 45 cm and 25cm, the total vertical height of the bucket is 30 cm and that of the cylindrical portion is 6 cm. Find the area of the metallic sheet used to make the bucket. Also find the volumes of water it can hold, [Take = 22/7]
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600.A bucket is in the form of a frustum of a cone with a capacity of 12308.8 cm3 of water. The radii of the top and bottom circular ends are 20 cm and 12 cm respectively. Find the height of the bucket and the area of the metal sheet used in making. [Use = 3.14]
Short Answer Type
= 3.14)
= 3.14]
= 22/7]
= 22/7]
= 3.14]
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