Question

Length of altitude in equilateral triangle for side 6 cm

Answer 1

Answer:

Step-by-step explanation:

as shown in diagram, the altitude in equilateral triangle always bisect baseline in 2 equal parts so ,

BD = CD = 3cm

now ADB is a right angle triangle so by pythagoras theorum,

AD^2 + DB^2 = AB^2

AD^2 = AB^2- DB^2 = 6^2 - 3^2 = 36-9 = 27

AD = √27 = 3√3 cm Ans

please mark it as brainliest

Answer 2

Area of an equilateral triangle: √3/4a²

= √3/4 *6*6

= 15.57cm²

Also

Area of triangle = 1/2*b*h

∴ 15.57 = 1/2*6*h

31.4/6 = h

h = 5.2cm

(Answer may vary as I have take it upto 2 decimal places)