Question

If the total surface of a sphere is 98.56 cm2. Find the radias of the sphere

Answer 1

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Answer 2

Answer:

• Radius of sphere = 2.8 cm

Step-by-step explanation:

Given:

• Total surface area of sphere = 98.56 cm²

To Find:

• Radius of sphere.

Now, we know that,

⇒ Total Surface area of sphere = 4πr²

⇒ 98.56 = 4 × 22/7 × r²

⇒ 98.56 × 7 = 88 × r²

⇒ 689.92 = 88 × r²

⇒ r² = 689.92/88

⇒ r² = 7.84

⇒ r = √7.84

⇒ r = 2.8 cm

Hence, Radius of sphere = 2.8 cm