Answer:
54 cm
Step-by-step explanation:
The area (A) of an equilateral triangle is
A =
( s is the side length ) then
= 81
( multiply both sides by 4 to clear the fraction )
s²
= 324
( divide both sides by
)
s² = 324 ( take the square root of both sides )
s =
= 18
Thus
perimeter = 3 × 18 = 54 cm
Answer:
I looked it up and it said 0.5
Step-by-step explanation:
11+11+9 equals 30 just do the math it simple
Answer:
12,13,15,16 i believe
Step-by-step explanation:
C 87 the median :::::::::::::