Question

find the surface area of sphere of radius 10.5cm​

Answer 1

Answer:

1386

Step-by-step explanation:

T.S.A of sphere = 4πr*r

given radius equals 10.5 cm

= 4*22\7*10.5*10.5

= 1386 cm*cm

(or)

13.86 m*m

Hope it helps you buddy.

Answer 2

Answer:

Hence, surface area of Sphere will be 1386 Sq. cm

Step-by-step explanation:

In context to question asked,

We have to determine the surface area of the sphere.

As per question,

We have,

Radius of sphere = 10.5 cm

As we know that,

Sphere is a three dimensional figure.

The surface area of sphere can be determined by using formula,

$Area = 4 \Pi r^2$

So, for determining the surface area we will put the value of r given in the question in above formula,

Thus we will get,

$Area = 4 \Pi r^2\\=> 4 \times \frac{22}{7} \times 10.5 \times 10.5\\=>4 \times 22 \times 10.5 \times 1.5\\=>1386\:cm^2$