The circumference of a circular field is 440m. Find its radius.
60m
76m
75m
70m
A solid cone of height 8cm and base radius 6 cm is melted and recast into identical cones, each of height 2cm and diameter 1 cm. Find the number of cones formed.
506
576
657
675
The ratio between the circumference of two circles is 4 : 9, find the ratio between their areas.
15 : 80
16 : 71
16 : 81
15 : 81
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
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 diameter of the base of a right circular cylinder is 28 cm and its height is 21 cm. Find its curved surface area.
1488 cm2
1248 cm2
3080 cm2
1848 cm2
The volume of the vessel, in the form of a right circular cylinder is 448 π cm3 and its height is 7 cm. Find the radius of the base.
8cm
9cm
5cm
10cm
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 surface area of a sphere is 2464 cm2 , find its volume.
11489.76 cm3
11498.67cm3
11894.67 cm3
11490.86 cm3
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
