Question

make any one 30 shape cuboid cylendre sphere write it's formula for curved surface area total surface area volume​

Answer 1

Answer:

Solid Shapes with Curved Faces

Cylinder

It has a round shape with flat faces on top and bottom.

Example – Pen holder

Consider a cylinder of radius r and height h. It can be considered to have a surface of rectangular height ‘h’ and width 2πr which is the circumference of the circular top and bottom end faces, as shown when it is opened and spread.

Thus, the Total Surface Area of a cylinder = Area of curved surface + Areas of 2 circular faces

= 2πrh + 2πr2 = 2πr(h+r) sq. Units

Curved Surface Area of a Cylinder = 2πrh sq.units

Volume of a cylinder = πr2h cubic units.