Question

please answer fast. correct answer will be Marked as brainlest​

Answer 1

Answer:

Ans is 63 as formula will be 1/2*base *height

Answer 2

Answer:

12 answer is 18 and

Step-by-step explanation:

area of an equilateral triangle formula=✓3/4

9✓3/4=✓3/4asquare

9✓3•4/✓3=a squre

✓36=a

a=6

perimeter=3•6=18