The radius of a circular wheel is . How many revolutions will it make in travelling 11 km. (π=
A1000
B1100
C900
D1200
The radius of a circular wheel is . How many revolutions will it make in travelling 11 km. (π=
A1000
B1100
C900
D1200
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A hollow iron pipe is 21 cm long and its exterior diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is