Question

Find the surface area

Answer 1

Total Surface area of Hemisphere = 3πr²
where, r is the radius of the Hemisphere.
d = 14 cm
r = d/2 = 14/2 = 7 cm
Total Surface Area = 3πr²
$= 3 \times \frac{22}{7} \times 7 \times 7$
$=462 {cm}^{2}$

Answer 2

                                             $\huge{\underline{\mathfrak{Surface\:Area}}}$

Question : Find the surface area of the given figure.

                                        Given Data :

1. The shape is a hemisphere
2. The diameter is 14 cm.

The total surface area of a hemisphere is 3πr², Where r is the radius and π is called pi.

The value of pi can be taken as  $\frac{22}{7}$ or as 3.14

In the question, the diameter is given as 14 cm. We know that, radius is half of diameter. Hence, the radius of the given hemisphere will be $\frac{14}{2}$ = 7 cm.

Let us take it as $\frac{22}{7}$

So, 3 × $\frac{22}{7}$ ×( 7)²

= 462 cm.

Therefore, the total surface area of the given hemisphere is 462 cm.