Question

1) Find the surface area of sphere having radius 7 cm​

Answer 1

Gıven :

• Radius of Sphere = 7cm

To Fınd :

• Surface Area of Sphere

Solutıon :

✰ Here in the question Radius of Sphere is given that is 7cm. and we need to find surface area of Sphere that is given by 4πr², where r is radius and π value is 22/7. By Putting the values in the formula we can easily find the surface area of Sphere.

Surface area of sphere = 4πr²

⟶ Surface area = 4 × 22/7 × (7)²

⟶ Surface area = 44/7 × 7 × 7

⟶ Surface area = 4 × 22 × 7

⟶ Surface area = 616cm²

∴ Surface area of Sphere is 616cm²

Answer 2

Answer:

Hence, surface area of Sphere will be 616 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 = 7 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,

$Area = 4 \Pi r^2\\=> 4 \times \frac{22}{7} \times 7 \times 7\\=>4 \times 22 \times 7\\=>616\:cm^2$