Question

Find the area of an equilateral triangle having side of 20m length also find its altitude

Answer 1

if abc is an equilateral triangle, then ab=bc=Cd=20cm
perimeter=60cm
semi-perimeter=30cm
(s-a)= 30-20=10
(s-b)=30-20=10
(s-c)=30-20=10
area=30×√10×√10×√10
area=100√3 cm square

area=1/2× base × height
100√3=1/2×20× height
height=100√3×2/20
height= 10√3cm(31cm)

Answer 2

here is ur answer ...

hope this will help u