Respuesta :

Firstly, the height increased.
Before restoration the height was 56.84*cos(5.5°).
After restoration : 56.84*cos(3.99°).
The difference is :
56.84*cos(3.99°)-56.84*cos(5.5°)=56.84(cos(3.99°)-cos(5.5°))=56.84*0.0022=0.1239≈0.124 - the answer