Listen NCERT Audio Books to boost your productivity and retention power by 2X.
A cylinder of same height and radius is placed on the top of a hemisphere. Find the curved surface area of the shape if the length of the shape is 7 cm.
Given, cylinder of same height and radius is placed on the top of a hemisphere.
Also, length of the shape is 7 cm
⇒ r + r = 7
⇒ r = 3.5 cm
Curved surface area of a hemisphere = 2πr2
Curved surface area of a cylinder = 2πr2
Total surface area of the shape = 4πr2
⇒ Total surface area of the shape = 4 × (22/7) × (3.5)2
⇒ Total surface area of the shape = 154 cm2