Question

a cylinder is open at both ends and is made of 1.5 cm thick metal . Its external diameter is 12cm and height is 84 cm. What is the volume of metal used in making the cylinder ? Also , find the weight of the cylinder if 1 cm3 of the metal weigh 7.5 g.

Answer 1

Answer

Step-by-step explanation: subtract the diameter by 3.

Then find the new radius.

Then find the volume with the new radius.

Then find the volume with the radius of outer diameter.

Then subtract the new volume from the old volume.

Finally,multiply the remainder with 7.5 to get the weight of the metal.