Объяснение: if its equilateral triangle so use formula r= /6 and need to find h=a/2 in the last find Ans: h-r= a/3=2.7/3
Объяснение: if its equilateral triangle so use formula r= /6 and need to find h=a/2 in the last find Ans: h-r= a/3=2.7/3