Question

find the total surface area
of a hemisphere of radius r/2 unit
​

Answer 1

Answer:

(3Pi r^2)/4

Step-by-step explanation:

formula for total surface area of a hemisphere=3Pi r2

where, r=r/2

so total surface area of hemisphere=(3Pi r^2)/4

Answer 2

Given:

• radius, r = r/2

To Find:

• The total surface area of the hemisphere.

Solution:

• The surface area of sphere = 4π$r^2$, but we need the surface area of the hemisphere,
• So surface area of half-sphere = 2π$r^2$  and surface are of circle = π$r^2$
• The surface area of the hemisphere = surface area of half-sphere + surface area of circle = 2π$r^2$+π
• Substitute the value of r in the formula we get,
• The surface area of the hemisphere = 3*pi*$r^3/2$

• The surface area of hemisphere = 3*pi*$r^3/2$

The surface area of the hemisphere = 3*pi*$r^3/2$