Question

ꜰɪɴᴅ ᴛʜᴇ ᴠᴏʟᴜᴍᴇ ᴏꜰ ꜱᴘʜᴇʀᴇ ᴡʜᴏꜱᴇ ʀᴀᴅɪᴜꜱ ɪꜱ

a) 7 cm
b) 0.63 m​

Answer 1

Answer:

a)7cm

volume =88*343\21

vol=88*49\3

1437.33333

Step-by-step explanation:

Answer 2

Answer:

Given :-

$\mapsto$ The radius of a sphere is :

• 7 cm
• 0.63 m

To Find :-

• What is the volume of sphere.

Formula Used :-

$\clubsuit$ Volume Of Sphere Formula :

$\mapsto \sf\boxed{\bold{\pink{Volume_{(Sphere)} =\: \dfrac{4}{3}{\pi}r^3}}}$

where,

• π = pie or 22/7
• r = Radius

Solution :-

❒ Radius Of Sphere 7 cm :

Given :

• Radius = 7 cm

According to the question by using the formula we get,

$\implies \sf Volume_{(Sphere)} =\: \dfrac{4}{3} \times \dfrac{22}{7} \times (7)^3$

$\implies \sf Volume_{(Sphere)} =\: \dfrac{4}{3} \times \dfrac{22}{7} \times 7 \times 7 \times 7$

$\implies \sf Volume_{(Sphere)} =\: \dfrac{88}{21} \times 343$

$\implies \sf Volume_{(Sphere)} =\: \dfrac{30184}{21}$

$\implies \sf\bold{\red{Volume_{(Sphere)} =\: 1437.33\: cm^3}}$

${\footnotesize{\bold{\underline{\therefore\: The\: volume\: of\: sphere\: whose\: radius\: is\: 7\: cm\: is\: 1437.33\: cm^3\: .}}}}$

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❒ Radius Of Sphere 0.63 m :

Given :

• Radius = 0.63 m

According to the question by using the formula we get,

$\longrightarrow \sf Volume_{(Sphere)} =\: \dfrac{4}{3} \times \dfrac{22}{7} \times (0.63)^3$

$\longrightarrow \sf Volume_{(Sphere)} =\: \dfrac{4}{3} \times \dfrac{22}{7} \times 0.63 \times 0.63 \times 0.63$

$\longrightarrow \sf Volume_{(Sphere)} =\: \dfrac{88}{21} \times 0.25$

$\longrightarrow \sf Volume_{(Sphere)} =\: \dfrac{22}{21}$

$\longrightarrow \sf\bold{\red{Volume_{(Sphere)} =\: 1.05\: m^3\: (approx)}}$

${\footnotesize{\bold{\underline{\therefore\: The\: volume\: of\: sphere\: whose\: radius\: is\: 0.63\: m\: is\: 1.05\: m^3\: .}}}}$