4 21. The area A of an equilateral triangle with
side length sis A=
$273. Use an integer
estimate for 3 to find the sum of areas of
the equilateral triangles shown below to the
nearest whole square centimeter. NMP

This activity will you meet these educational goals: mathematical practices-you will make sense of problems and solve them, reason abstractly and quantitatively, and usemathematics to model real-world situations.directionsread the instructions for this self-checked activity type in your response to each question, and check your answers. at theend of the activity, write a brief evaluation of your work.