Yolanda's sunflower plant was 64.34 cm tall in july. during august, the plant grew 18.2 cm.

part a:
estimate the height of yolanda's plant at the end of august by rounding each value to the nearest whole number. will your estimate be less than or greater than the actual height? explain your reasoning.

part b:
was the exact height of the plant at the end of august? was the estimate less than or greater than the exact value?

plz