Dr. Tanzil's Island

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Dr Tanzil has a circular shaped lake that he bought long ago. One day while he was visiting there, he found out with great surprise that, there has risen a round shaped island exactly from the center of the lake. He was very happy and considered the island as a gift from God. He decided to use the island for the welfare of people. So he decided to build a library that would be open for everyone.

This is a companion discussion topic for the original entry at https://toph.co/p/dr-tanzil-s-island

Why i can’t see any figure in this problem?

There is no figure that would be shown.

Where is the figure?