The Engineering Mindset on MSN

Calculate the area of a circle from radius or diameter

Circle area can be calculated from either its radius or diameter using two equivalent formulas: Ï€r² or (Ï€ × diameter²) ÷ 4.

"The ultimate way to eliminate calculation errors is not to calculate" — The secret spell used for 6th-grade math, area of a circle

"The formula is correct, but I can't get the points..."One of the major hurdles that appears in 6th-grade elementary math is ...