Question

Find the surface area of sphere, if the radius is 4cm​

Answer 1

Step-by-step explanation:

Radius of Sphere (r) = 4cm

∴ Surface Area of Sphere = 4πr²

= 4 × π × 4² cm²

= 64 × π cm²

= 64×$\frac{22}{7}$ cm²

=$\frac{1408}{7}$ cm²

=201.14 cm²

Answer 2

Answer:

Hence, surface area of Sphere will be 201.15 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 = 4 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,

$Area = 4 \Pi r^2\\=> 4 \times \frac{22}{7} \times 4 \times 4\\=>\frac{4 \times 22 \times 16}{7}\\=>\frac{1408}{7} = 201.1428 \approx 201.15\:cm^2$