Question

Q. 6 S.A of sphere is
9856 cm?
surface
Find
Volume
​

Answer 1

Answer:

S.A of a sphere =4×π×r×r

9856=4×22/7×r^2

R^2=9856×7/88

R^2=112×7

R^2=784

R=√784

R=28cm.

volume of a sphere =4/3×π×r×r×r

v=4/3×22/7×28×28×28

v=88×4×28×28/3

v=2,75,968/3 cm^3.

Answer 2

Step-by-step explanation:

S.A of sphere=

$4\pi \: r {}^{2}$

• $4 \times \frac{22}{7} \times r {}^{2}$
• 9856=
• $4 \times \frac{22}{7 } \times r {}^{2}$
• $r {}^{2} = \frac{9856 \times 7}{4 \times 22}$
• $r {}^{2} = \frac{68992}{88}$
• $r {}^{2} = 784$
• $r = \sqrt{784}$
• $r = 28$
• $volume \: of \: sp here = \frac{4}{3} \times \pi \times r {}^{3}$
• $\frac{4}{3} \times \frac{22}{7} \times 28 \times 28 \times 28$
• volume of sphere = 91989.3..