Question

find the radius of a sphere having surface area 1256sq.cm 3.14​

Answer 1

★Given:

• Surface area of sphere = 1256sq.cm
• π = 3.14

★To find:

• The radius of sphere.

★Solution:-

We know:

★CSA of sphere = 4πr²

Where,

• r = radius
• π = 3.14
• CSA = 1256sq.cm

Putting the values,

→CSA = 4πr²

⇒1256 = 4(3.14)(r)²

⇒1256/4 = 3.14r²

⇒314 = 3.14r²

Cancelling out common terms from both sides,

⇒ r² = 100

⇒ r = √100

⇒ r = 10m

Hence,

The radius of sphere is 10m.

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