Question

pls solve 13.8 9th question​

Answer 1

Answer:

(1) i) Radius of the sphere, r = 7 cm

Volume of the sphere = 4/3πr3

= 4/3 × 22/7 × 7 cm × 7 cm × 7 cm

= 4312/3 cm3

= 1437.33 cm3

ii) Radius of the sphere, r = 0.63m

Volume of the sphere = 4/3πr3

= 4/3 × 22/7 × 0.63 m × 0.63 m × 0.63 m

= 1.047816 m3

= 1.05 m3 (approx.)

(2) i) r = 28/2 =14cm

⇒Volume = 4/3 x 22/7 x 14 x 14 x 14

⇒11498.66cm³

(ii) r = 0.21/2 = 0.105,

Vol = 4/3 x 22/7 x (0.105)³

⇒0.004851m³

$</p><p>Hope \: helped \: </p><p>$

Answer 2

Step-by-step explanation:

Answer:

(1) i) Radius of the sphere, r = 7 cm

Volume of the sphere = 4/3πr3

= 4/3 × 22/7 × 7 cm × 7 cm × 7 cm

= 4312/3 cm3

= 1437.33 cm3

ii) Radius of the sphere, r = 0.63m

Volume of the sphere = 4/3πr3

= 4/3 × 22/7 × 0.63 m × 0.63 m × 0.63 m

= 1.047816 m3

= 1.05 m3 (approx.)

(2) i) r = 28/2 =14cm

⇒Volume = 4/3 x 22/7 x 14 x 14 x 14

⇒11498.66cm³

(ii) r = 0.21/2 = 0.105,

Vol = 4/3 x 22/7 x (0.105)³

⇒0.004851m³

< /p > < p > Hope \: helped \: < /p > < p ></p><p>Hopehelped</p><p>