Question

A toy is in the form of cylinder of radius √2 and height is 3.5m surmounted by a cone whose vertical angle is 90 .Find the total surface of toy​

Answer 1

The radius 'r' of a cylinder is the radius of its base. Now, the area of the rectangle = length × breadth. 2πr is the circumference of the circle and h is the height. Area of the curved surface will be = 2πr × h = 2πrh.