How do you write a number that has four digits with the same number in all the places

Can someone check my answer? you : )

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

We just started the introduction into circles and i have no idea how to do this.