−5.5(d−2)=−12.1 whats the value of d

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

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?