Spherical ball of diameter 21 cm is melted and recasted into cubes, each of side 1 cm. Find the number of cubes thus formed.
4800
5800
4851
5851
Calculate the area of the following triangle.
65 cm2
70 cm2
72 cm2
79 cm2
Volume of two sphere are in the ratio 64 : 27. The ratio of their surface area is:
3 : 4
4 : 3
9 : 16
16 : 9
Gradient of the straight line y = 2x + 1 is:
0
1
-1
2
The y - intercept of the straight line y = -x is:
Three sphere of radii 3 cm, 4cm and 5 cm are melted to form a new sphere. Then, the radius of the new sphere is:
6 cm
7.5 cm
10 cm
12 cm
Coordinate of the midpoint of the line segment joining the points (5,6) and (1,2) is:
(1,2)
(2,4)
(3,4)
(4,5)
If radius of a sphere is doubled then its volume becomes ________ times.
3
8
Solve 2x + y = 12 and 2x - y = 8.
x = 1, y = 2
x = 5, y = 1
x = 5, y = 2
x = 2, y = 5
Equation of the straight line passes through (1,1) and (4, 7) is:
y = 2x + 1
y = 2 x - 1
y = x + 2
y = x - 2
