Question

Find the volume and the total surface area of a hemisphere of radius 3.5 cm. (π = 22/7)

Answer 1

first put what what thing we have given and then put the formula of hemisphere two by three fire cube and then put the pie value 22 by 7 and then solve it

Answer 2

Answer:

Volume 89.83 cm³

Surface area 115.5 cm².

Step-by-step explanation:

We have to calculate the volume and total surface area of a hemisphere.

The volume of a hemisphere is given by 2/3 of πr³ where r is the radius of the hemisphere.

Now, it is given that the radius is 3.5 cm.

So, the volume =2/3{π(3.5)³}=89.83 cm³ (Answer)

Now, the total surface area of the hemisphere is given by (2πr²+πr²)=3πr².

Hence, the required surface area =3π(3.5)² =115.5 cm² (Answer)