Question

13. A tennis ball is of diameter 7.0 cm. What is its
volume in (a) cm3 (b) m3?
[(a) 179.6 cm3 (b) 0.0001796 m3)​

Answer 1

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Answer 2

Given:-

• Diameter of ball = 7.0 cm means 7 cm.

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To find:-

• Volume of ball.

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$\huge \tt \: ☃\:Solution$

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We know that

✶ Volume of sphere = ⁴/₃ πr³

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In which r is Radius

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R = D/2

R = 7/2 cm

R = 3.5 cm

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Put the values

⇒ ⁴/₃ × ²²/₇ × (3.5)³

⇒ ⁴/₃ × ²²/₇ × 42.875

⇒1.333 × 3.14 × 42.875

⇒ 179.59 cm³(approx)

Therefore, Volume of ball is 179.59 cm³(approx).

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More information:-

• Ball is a type of sphere.
• So the volume of ball and sphere will be same.
• Volume of sphere is ⁴/₃ πr³ . In which r is Radius.