Question

if the radius of a ball is 5 cm then calculate its volume​

Answer 1

Answer:

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Answer 2

Answer

Volume

=

3

4

πr 3

3

4

×

π

(5) 3

=

523.33

cm

3

=

5.2333×

10

2

cm

3

↓

5 significant figures

Since radius has single significant figure, so, volume should also have single significant figure.

For single significant figure, we have to drop all after decimal.

⇒Volume

=

5×

10

2

cm

2

(if the digit to be dropped is less than 5, preceding digit is left unchanged)

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