Question

A hollow iron pipe is 21 cm long and its external diameter is 8 cm.If the thickness of the pipe is 1 cm and iron weights 8g/cm cube, then find the weight of the pipe.

Answer 1

Weight = 21 × 8 × 1 = 168 kg

Answer 2

${ \huge\rm \pink {♡H}\rm \blue {A} \rm \purple {N}\ \rm \green{J} \rm\red {U}\ \rm \orange {H} \rm{U} \rm \gray{I♡}}$