Find the curved surface area and the total surface area of a hemisphere with a radius of $17.5 \, cm$.

(N/A) Given,radius $r = 17.5 \, cm = \frac{35}{2} \, cm$.
Curved Surface Area of a hemisphere = $2\pi r^2$.
$= 2 \times \frac{22}{7} \times \frac{35}{2} \times \frac{35}{2} = 11 \times 5 \times 35 = 1925 \, cm^2$.
Total Surface Area of a hemisphere = $3\pi r^2$.
$= 3 \times \frac{22}{7} \times \frac{35}{2} \times \frac{35}{2} = 3 \times 11 \times 5 \times \frac{35}{2} = 165 \times 17.5 = 2887.5 \, cm^2$.