For the following questions answer them individually
A copper sphere of 6 cm diameter is melted to prepare a long wire of diameter 0.2 cm. Then the length of the wire (in metres) is
For integers a, b and m > 0, write $$a \equiv b$$ (mod m)if m divides a - b. Thea Which one of the following is true ?
A copper rod of diameter 1 cm and length 8 cm is drawn into a wire of lenghth 18 meters of uniform diameter. Then the diameter of the wire in centimeters is
In a class, the number of boys and girls are in the ratio 2 : 1. If five boys leave the class and five girls join class. Then the ratio becomes 7 : 5. The number of boys in that class at the beginning is
The curved surface area of a cone is 4070 sq. cm. If the diameter of the base of that cone is 70 cm, then its slant height in centimeters is
If 20 and 24 are factors of n, then which one of the following is a factor is a factor of n ?