It should be x=11 instead of x=-11, so he is not correct because he made a sign error.
125in is equal to how many ft and in? (show work)
1 answer:
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It should be x=11 instead of x=-11, so he is not correct because he made a sign error.
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