1, accessible radius = 10, so area = 100π, so volume = area × 1.5= 150π (no π can be converted by itself).

2. Bottom area =πR? = 100π

Inner wall area = perimeter × depth =2πR× 1.5=60π.

So the total area =2 10π.

3. Volume = bottom area × height =πR? × 1= 100π