If the curved surface area of a right circular cone is 10010 sq cm and its radius is 35 cm, find its volume?1). 6930 cubic cm 2). 13860 cubic cm3). 3465 cubic cm4). 27720 cubic cm
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1. If $S_{1}$ and $S_{2}$ be the surface area of a sphere and the curved surface area of the circumscribed cylinder respectively, then $S_{1}$ is equal to
2. Water is being pumped out through a circular pipe whose internal diameter is 7cm . If the flow of water is 12 cm per second , how many litres of water is being pumped out in one hour
3. If the length of a rectangle is increased by 25%, then by how much percent breadth should be reduced so that the area remains the same?
4. If a cone, a hemisphere and a right circular cylinder stand on equal base and have the same height then their volumes are in the ratio
5. ABCD is a trapezium in which $AB\parallel DC$ and AB = 2 CD. The diagonals AC and BD meet at O. The ratio of area of triangles AOB and COD is
6. The respective ratio of radii of two right circular cylinders (A and B) is 4 : 5. The respective ratioof volume of cylinders A and B is 12 : 25. What is the respective ratio of the heights of cylinders A and B ?
7. The lengths of the diagonals of a rhombus are 10 cm and 6 cm. The area of rhombus is:
8. The diameter of a 120 cm long roller is 84 cm. It takes 500 complete revolutions of the roller to level a ground. The cost of levelling the ground at Rs. 1.50 per sq. m. is :
9. The perimeter of a rectangular field is 84 m. If the length of the field is 3 m more than twice the breadth, then what is the length of the filed?
10. In a parallelogram, the lengths of the two adjacent sides are 12 cm and 14 cm respectively. If the length of one diagonal is 16 cm, find the length of the other diagonal.
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