Question

Find radius of sphere is 3.5cm. Find its surface and volume

Answer 1

Answer:

Step-by-step explanation:

Given :-

Radius of sphere = 3.5 cm

To Find :-

Surface Area and Volume

Formula to be used :-

Surface Area = 4πr²

Volume = 4/3πr³

Solution :-

Putting all the values, we get

⇒ Surface Area = 4πr²

⇒ Surface Area = 4 × 22/7 × (3.5)²

⇒ Surface Area = 154 cm²

Now we find volume of sphere

⇒ Volume of sphere = 4/3πr³

⇒ Volume of sphere = 4/3 × 22/7 × (3.5)³

⇒ Volume of sphere = 179.67 cm³

Hence, the surface area is 154 cm² and volume is 179.67 cm³.