Question

CAN SOMEONE PLEASE HELP ME !!!!
plz solve both the Questions.....​

Answer 1

1) Volume of Spherical Shell

$= \frac{4}{3} \pi \times {outer \: radius}^{3} - \frac{4}{3} \pi \times {innerradius}^{3}$

$=( \frac{4}{3} \times \frac{22}{7} \times 5 \times 5 \times 5) - ( \frac{4}{3} \times \frac{22}{7} \times 4.5 \times 4.5 \times 4.5)$

$= 523.8 - 381.8$

$= 142 {cm}^{3}$

Mass of Hollow Sphere

$= 142 \times 8.82$

$= 1252.44g$