Question

find the surface area of hemisphere having diameter 30cm?​

Answer 1

Answer:

2121.43cm²

Step-by-step explanation:

area of hemisphere is equal to 3πr²

(3.22.15.15)/7

2121.43 cm²

Answer 2

Answer:

2121.42 cm²

Step-by-step explanation:

given:-

diameter = 30 cm

to find:-

surface area of hemisphere

solution:-

first we will find the radius of the hemisphere

radius = diameter÷2 = 30÷2 cm = 15 cm

surface area of hemisphere = 3πr² =

3×22×15×15

7

=

14850

7

=

2121.42 cm²

if we think π = 3.14, we will get the surface area=

2119.4

so the average is

2120 cm²

you can right as instructions.

here surface area = total surface area (tsa)

hope it helps.