If the number of square centimetres on the surface of a sphere is equal to the number of cubic centimetres in its volume, what is the diameter of the sphere?
3
4
2
6
The area of a circular plot is 9856 sq.m. Calculate the cost of fencing the plot at the rate of Rs. 6 per metre.
Rs. 2,112
Rs. 3,000
Rs. 2,101
Rs. 2,000
The area of the base of a conical solid is 154 cm2 and its volume is 1232 cm3. Find curved surface area of the solid.
500 cm2
552 cm2
553 cm2
550 cm2
The circumference of the base of a 12m high conical tent is 66m. Find the volume of the air contained in it.
1386 m3
1286 m3
1368 m3
1268 m3
Find the depth of a cylindrical tank of radius 28m, if its capacity is equal to that of a rectangular tank of size 28m x 16 m x 11m.
2.5 m
2 m
2.75 m
3 m
The square areas of two spheres are in the radius of 9 : 25. Then their volumes are in the ratio
81 : 625
729 : 15625
27 : 75
27 : 125
If the diameter of the cross - section of a wire is decreased by 20%, how much percent will the length be increased so that the colume remains the same?
56.28
26.52
56
56.25
A solid rectangular block of metal 49 cm by 44 cm by 18 cm is melted and formed into a solid sphere. Calculate the radius of the sphere.
21 cm
20 cm
19 cm
25 cm
How many cubic metres of each must be dug out to make a well 28m deep and 2.8 m in diameter?
268 m2
250 m2
246 m2
246.40 m2
The volume of a sphere is 38808 cm3 , find its diameter and the surface area.
5454 cm2
4455 cm2
5544 cm2
5455 cm2
