Question

91. The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long
with outer radius of 14 cm. Find the volume of the metal used in
making the cylinder, assuming that it is open at both the ends. Also
find its weight in the metal weighs 8 g per em​

Answer 1

Answer:

Volume of any 3- dimensional object, whose Opposite faces are congruent to each other = area of the base × height.