Question

9. The height of an equilateral triangle having each side 12 cm is
(a) 62 (b) 63 (c) 36 (d) 6/6​

Answer 1

Step-by-step explanation:

dear the answer will be this... hope it helps you

Answer 2

Answer:

height =6√3cm ar(∆) = 36cm

Step-by-step explanation:

altitude of equilateral triangle bisects the side on which forms right angled triangle

therefore,

CD=DB=6cm

also, ABC, angle ABC= 90°

On applying Pythagoras theorem

(AC)^2= (CD)^2 + (AD) ^2

( 12)^2=(6)^2+(AD)^2

(AD) ^2= 108

AD=√108

AD=6√3 cm

ar(∆)= 3×side

= 3×12

= 36 cm