First proper answer gets brainliest on test !

this semicircle has a diameter of 5 what is the area of this figure? use 3.14 for pi

enter your answer as a decimal in the box round your answer to the nearest hundredth

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9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?