Question

Today Question !!

find the surface area of a sphere of diameter 14 cm

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Answer 1

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Step-by-step explanation:

Radius of Sphere

$r = \frac{diameter}{2} = \frac{14}{2} = 7cm$

Surface area of Sphere

$4\pi {}^{2}$

$= 4 \times \frac{22}{7} \times 7 \times 7 {cm}^{2}$

$4 \times 22 \times 1 \times 7 {cm}^{2}$

$= 616 {cm}^{2}$

Answer 2

Given :

• Shape = Sphere
• Diameter of Sphere = 14cm

To Find :

• Find the Total Surface Area of Sphere ?

Solution :

Finding the radius of the sphere :

• Diameter = 2 × Radius

➣ Radius = Diameter/2

➣ Radius = 14/2

➣ Radius = 7cm

Finding Total Surface Area of Sphere :

• Total Surface Area of Sphere = 4πr²

➣ Total Surface Area = 4πr²

➣ Total Surface Area = 4 × 22/7 × (7)²

➣ Total Surface Area = 4 × 22/7 × 7 × 7

➣ Total Surface Area = 4 × 22 × 7

➣ Total Surface Area = 88 × 7

➣ Total Surface Area = 616cm²

Hence,

• The Total Surface Area of Sphere is 616cm².