The edges of three iron cubes are 6cm; 8cm; 10cm respectively. A new cube was made by melting them. Find the edge of the new cube?
A. 8 cm
B. 12 cm
C. 14 cm
D. 10 cm
The area of the floor of a room is 20 m2 that of a longer wall 15 m2 and of the shorter wall 12 m2, find the edge of the new cube?
The area of the floor of a room is 20 m2 that of a longer wall 15 m2 and of the shorter wall 12 m2, find the edge of the new cube?
A. 450 m3
B. 100 m2
C. 60 m3
D. 400 m3
lb = 20 ; lh = 15 ; fh = 12
(lbh)2 = 20 * 15 * 12 => lbh = 60 m3
If the sides of two cubes are in the ratio 3: 1 the ratio of their total surface area is?
If the sides of two cubes are in the ratio 3: 1 the ratio of their total surface area is?
A. 3:1
B. 8:1
C. 9:1
D. 12:1
a1 : a2 = 3 : 1
6 a12 : 6 a22 = 9: 1
The edges of a cuboid are respectively 3cm, 4cm and 12 cm. Find the length of the diagonal of cuboid.
The edges of a cuboid are respectively 3cm, 4cm and 12 cm. Find the length of the diagonal of cuboid.
A. 5 cm
B. 19 cm
C. 13 cm
D. 144 cm
The edges of a cuboid are 4 cm, 5 cm and 6 cm. Find the volume of the cuboid?
The edges of a cuboid are 4 cm, 5 cm and 6 cm. Find the volume of the cuboid?
A. 120 cm3
B. 120 cm2
C. 148 cm2
D. 15 cm3
4*5*6 = 120
The edges of cuboid are 4 cm; 5 cm and 6 cm. Find its surface area?
The edges of cuboid are 4 cm; 5 cm and 6 cm. Find its surface area?
A. 120 cm2
B. 148 cm2
C. 74 cm2
D. 15 cm2
2(4*5 + 5*6 + 4*6) = 148
The edge of three cubes of metal is 3 dm, 4 dm and 5 dm. They are melted and formed into a single cube. Find the edge of the new cube?
The edge of three cubes of metal is 3 dm, 4 dm and 5 dm. They are melted and formed into a single cube. Find the edge of the new cube?
A. 3 dm
B. 4 dm
C. 5 dm
D. 6 dm
33 + 43 + 53 = a3 => a = 6
How many cubes of edge 2 dm can be cut out of a meter cube?
How many cubes of edge 2 dm can be cut out of a meter cube?
A. 50
B. 64
C. 216
D. 125
1 * 1* 1 = 2/10 * 2/10 * 2/10 * x
x = 125
The volume of a cube is 1728 cc. Find its surface.
The volume of a cube is 1728 cc. Find its surface.
A. 864 cm2
B. 648 cm2
C. 486 cm2
D. 468 cm2
Explanation:
a3 = 1728 => a = 12
6a2 = 6 * 12 * 12 = 864
The surface of a cube is 24sq cm. Find its volume?
The surface of a cube is 24sq cm. Find its volume?
A. 8 cc
B. 16 cc
C. 32 cc
D. 64 cc
6a2 = 24
a = 2 => a3 = 8cc