Question

Find the total surface area of a hemisphere of radius 10 CM... (Use x=3.14 )

Answer 1

$\huge\mathfrak{solution}$

Given:

• Radius of the Hemisphere = 10cm

To find:

• Total surface area of the Hemisphere=?

Answer:

As we know that ,

$\star \bold{TSA \: \: Of \: \: hemisphere = 3\pi {r}^{2} }$

=> TSA Of hemisphere = 3(3.14)(10^2)

=> TSA Of hemisphere =300(3.14)

=> TSA Of hemisphere= 942cm^2

Formula of hemisphere:

• CSA of hemisphere = 2πr^2

• Volume of hemisphere = 2/3 πr^2

Answer 2

Answer:

The radius of the hemisphere = 10 cm.

We need to find the total surface area of the hemisphere.

The formula for this is = 3πr²

The question says to use π = 3.14

So, 3 × 3.14 × 10²

➜ 3 × 314/100 × 100

➜ 942 cm²

$\rule{200}2$

• The total surface area of sphere = 4πr².
• The total surface area of hemisphere = 3πr².
• The curved surface area of the hemisphere = 2πr².
• Volume of the sphere = 4/3 πr³.
• Volume of the hemisphere = 2/3 πr³.

$\rule{200}4$