If a solid sphere of radius 10 cms is moulded into 8 spherical solid balls of equal radius, then surface area of each ball (in cm2) is________?
A. 100π
B. 7π
C. 60π
D. 50π
Volumes · Easy · 1 month ago
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Volumes
The areas of the two spheres are in the ratio 1: 4. The ratio of their volume is?
A. 1:4
B. 1:16
C. 1:8
D. 1:64
Volumes · Easy · 1 month ago
The volumes of two cubes are in the ratio 27: 125, what shall be the ratio of their surface areas?
A. 6:25
B. 3:5
C. 9:25
D. 16:25
Volumes · Easy · 1 month ago
What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high?
A. 10 cm
B. 12 cm
C. 15 cm
D. 13 cm
Volumes · Easy · 1 month ago
Find the length of the wire required to go 15 times round a square field containing 69696 m2.
A. 15840 m
B. 16840 m
C. 15820 m
D. 15640 m
Volumes · Easy · 1 month ago
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
Volumes · Easy · 1 month ago
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
Volumes · Easy · 1 month ago
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
Volumes · Easy · 1 month ago
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