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abruzzese [7]
2 years ago
13

I need help with this

Mathematics
2 answers:
GarryVolchara [31]2 years ago
6 0
If you Are on Week 4 you would read 9 Chapters, meaning you would have read 12 chapters on the 5th Week! 
~Izzy~
zhuklara [117]2 years ago
3 0
A. 9 because she reads 2 additional chapters per week
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Find the
Mazyrski [523]

Answer:

54 cm

Step-by-step explanation:

The area (A) of an equilateral triangle is

A = \frac{s^2\sqrt{3} }{4}  ( s is the side length ) then

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s²\sqrt{3} = 324\sqrt{3} ( divide both sides by \sqrt{3} )

s² = 324 ( take the square root of both sides )

s = \sqrt{324} = 18

Thus

perimeter = 3 × 18 = 54 cm

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