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:
D. x>[4]
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Answer:
8 students
Step-by-step explanation:
72 slices of pizza and 80 cookies were purchased after a school program
Each student will get an equal numbert of both pizza and cookies
72/8
= 9
80/8
= 10-1
= 9
Hence 8 students can attend the after tutoring program
Answer:
81 and above
Step-by-step explanation:
They have to be 81 and above
93+69+89+97=348
348/4=87 (average)
87=81=168
168/2= 84 (average)
