I need to find the volume

Apool measures 100 meters by 100 meters a toddler inside the pool and trows a ball 60 centimeters from one edge of the pool. how far is the ball from the opposite edge of the pool

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625

Find all the angles that satisfy the equation cos(θ)=32