Find the perimeter of an eqaletaral …

{tex}% MathType!MTEF!2!1!+- % feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGceaqabeaacaWGbb % Gaeyypa0ZaaSaaaeaadaGcaaqaaiaaiodaaSqabaaakeaacaaI0aaa % aiaadggadaahaaWcbeqaaiaaikdaaaaakeaacaaI2aGaaGinaiabg2 % da9maalaaabaWaaOaaaeaacaaIZaaaleqaaaGcbaGaaGinaaaacaWG % HbWaaWbaaSqabeaacaaIYaaaaaGcbaGaamyyaiabg2da9iaaigdaca % aIYaGaaiOlaiaaigdacaaI1aGaamyBaaqaaiaadchacqGH9aqpcaaI % ZaGaey41aqRaamyyaaqaaiaadchacqGH9aqpcaaIZaGaaGOnaiaac6 % cacaaI1aGaamyBaaaaaa!5373! \eqalign{ & A = {{\sqrt 3 } \over 4}{a^2} \cr & 64 = {{\sqrt 3 } \over 4}{a^2} \cr & a = 12.15m \cr & p = 3 \times a \cr & p = 36.5m \cr} {/tex}