Question

The total surface area
of the Solid
hemisphere is 1848 cm. the radius
​

Answer 1

Total surface area of hemisphere =3πr ²

where r= radius of hemisphere

3πr ² =1848

⇒3× 22/7×r ² =1848

⇒r ²= 1848×7/3×22 = 196

r= √196 = 14 cm

Answer 2

Question ::-

The total surface area of the Solid hemisphere is 1848 cm. Find the radius ?

Given ::-.

• Surface area of hemisphere = 1848 cm

To find ::-

• Find the radius ?

Solution ::-

We know ,

Surface area of hemisphere

$S. \: A. = \: \: 3\pi {r}^{2}$

$1848 = \: \: 3\ \times \dfrac{22}{7} \times {r}^{2}$

$\dfrac{1848}{3} = \dfrac{22}{7} \times {r}^{2}$

$616 = \dfrac{22}{7} \times {r}^{2}$

$616 \times\dfrac{7}{22} = {r}^{2}$

$\dfrac{4312}{22} = {r}^{2}$

$196= {r}^{2}$

$\sqrt{196} = r$

$14 \: = r$

_______________

Radius of solid hemisphere is 14 cm