Question

find the volume of a sphere where radius is 9 cm [π=3.14]​

Answer 1

Answer:

3052.08 cm³

Step-by-step explanation:

VOLUME OF A SPHERE=3/4πR³

4/3*3.14*729. (9)³=729

=4*3.14*243

=3052.08 cm³

Answer 2

Answer

• Volume of the sphere = 3,052.08 cm³

Explanation :-

Given

• Radius of a sphere = 9 cm

To find

• Volume of a sphere

Knowledge required :-

• Formula to calculate volume of sphere :-

⠀⠀ $\pmb{Volume~of~sphere~ = \dfrac{4}{3} \pi{r}^{3}}$

where,

• Take π = 3.14
• r = radius of the sphere

Solution

Substitute the given values in the formula,

$: \implies \sf volume = \dfrac{4}{3} \pi {r}^{3}$

$\\ : \implies \sf volume = \dfrac{4}{3} \times 3.14 \times {9}^{3}$

$\\ : \implies \sf volume = \dfrac{4}{3} \times 3.14 \times 9 \times 9 \times 9$

$\\ : \implies \sf volume = \dfrac{4}{ \not3} \times 3.14 \times \not9 \times 9 \times 9$

$\\ : \implies \sf volume = 4 \times 3.14 \times 9 \times 9$

$\\ : \implies \red{\pmb{\underline{volume \: of \: the \: sphere = 3,052.08 \: cm^{3} }}} \: \: \: \bigstar$

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⠀⠀⠀Some related formulae :-

• Surface area of sphere = 4πr²
• Volume of cylinder = πr²h
• Volume of cone = 1/3 πr²h
• Curved surface area of cone = πrl
• Total surface area of cone = πrl + πr²h
• Total surface area of cylinder = 2πrh + 2πr²
• Area of circle = πr²
• Circumference = 2πr
• Diameter = 2 × Radius
• Radius = Diameter/2