Related Questions

If the radius of a sphere is doubled, how many times does its volume becomes ?
A 2 times
B 4 times
C 6 times
D 8 times
If the radius of cylinder is halved and height is doubled , then what will be the curved surface area?
A Increase by 1
B The same
C Double
D Triple
If th radius of cylinder is halved and height is doubled, then what will be the curved surface area?
A icrease by 1
B the same
C double
D triple
If the radius of cylinderis halved and height is doubled, then what will be the curved surface area?
A increase by 1
B the same
C double
D triple
The area of circle A is 6.25 sq. in. If radius of the circle is doubled, what is the new area of circle A in sq. in?
A 5 pi
B 12.5 pi
C 25 pi
D 39.0625 pi
A sphere of radius 21 cm is cut into 8 identical parts by 3 cuts (1 cut along each axis). What will be the total surface area (in cm2) of each part?
A 844.5
B 1732.5
C 1039.5
D 1115.6
Two forces of magnitude 3m and 2m respectively have a resultant R. if the first force is doubled, the magnitude of the resultant is doubled.Find the angle betuween forces?
A 90°
B 120°
C 135°
D 145°
3N ও 2N মানের দুইটি বলের লদ্ধি R । প্রথম বলের মান দ্বিগুণ করলে লদ্ধির মানও দ্বিগুণ হয়। বলদ্বয়ের মধ্যবর্তী কোণের মান হবে- (The resultant of two forces 3N and 2N is R. If the first force is doubled then the resultant is also doubled. The angle between the forces is-)
A 30°
B 45°
C 65°
D 120°
If radius of a circle is increased by 30% then its area is increased by -
A 40%
B 70%
C 50%
D 69%
If a rectangle's length and width are both doubled, by what percent is the rectangle's area increased?
A 50%
B 100%
C 200%
D 300%

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