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OpenStudy (anonymous):
An equilateral triangle has a perimeter of 21 m. If the area is multiplied by 1/2 (one-half), what is the new side length?
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OpenStudy (eyust707):
What is the original side length?
OpenStudy (eyust707):
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OpenStudy (eyust707):
All the sides are the same length and they add up to 21
OpenStudy (anonymous):
thank you
OpenStudy (anonymous):
Hint: Length of new side 21/3x X=7 Therefore present area= 1/2×root(7^2-3.5^2)
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