Question

Find the surface area of a ball with a radius of 2 decimeters

Answer 1

Answer :-

The surface area of ball with radius of 2dm is 50.28dm².

Step-by-step explanation:

To Find :-

• The surface area of ball.

★ Solution

Given that,

• The radius of ball = 2 dm

We know,

Surface area of sphere = 4πr²

Where,

• r = Radius.

Therefore,

⇒ 4πr²

⇒ 4 × π × r²

⇒ 4 × 22/7 × (2)²

⇒ 4 × 22/7 × 4

⇒ (4 × 22 × 4)/7

⇒ (88 × 4)/7

⇒ 50.28dm²

Hence,

The surface area of the ball is 50.28dm².

Formula used :-

• Surface area of sphere = 4πr² sq. units.

More Information

Some more formulas related surface area :-

• Surface area of cuboid = 2(lb+bh+hl) sq. units.
• Surface area of cube = 6(a)² sq. units.