1. A solid metallic spherical ball of radius 7 cm is melted down and recast into small cones. If the diameter of the base of the cone is 14 cm and the height is 2 cm, find the number of such cones can be made.
1) 14 2) 28 3) 7 4) 12 5) None of these
2. A hall is 10metres long and 8metres wide. What will be the cost of carpeting the room if 0.5 metres of space is left around the room? The rate of 0.25 metre wide carpet is Rs.20 per metre.
1) Rs.1560 2) Rs.2520 3) Rs.1875 4) Rs.5040 5) None of these
3. A square field has an area of 50625 sq. m. Find the cost of fencing around it at Rs. 15 per metre.
1) Rs.12500 2) Rs.17500 3) Rs.13500 4) Rs.16250 5) None of these
4. Cost of fencing a circular plot at the rate of Rs.12 per metre is Rs.2,640. What will be the cost of carpeting the floor of the plot at the rate of Rs.85 per square metre?
1) Rs.3,25,250 2) Rs.3,22,350 3) Rs.3,27,250 4) Rs.3,25,750 5) None of these
5. A circle and a rectangle have the same perimeter. The sides of the rectangle are 18 cm and 26 cm. What will be the area of the circle?
1) 88 cm2 2) 1250 cm2 3) 154 cm2 4) 128 cm2 5) None of these
