the area of an equilateral triangle is 64 root 3sq.m. Find its perimeter
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Area of a equilateral triangle = √3÷4 ×side So, 64√3=√3÷4× side (s) 64√3÷√3×4=s 64×4=s s=256 Perimeter of a equilateral triangle= side 1 +side 2 +side 3 =256+256+256 =768 Perimeter of equilateral triangle = 768 m
deepaknamala:
thanks but your answer is wrong. The answer is 48 cm
But my formula and method is correct so how it is wrong
I'm sorry my answer is wrong .
See the correct
Area of equilateral triangle=√3÷4×side(s)×side(s). 64√3=√3÷4×s×s. 64√3÷√3×4=s×s. 64×4=s×s. 256=s^2. s=√256. s=16. Perimeter of equilateral triangle = side × 3. Perimeter= 16 × 3. Therefore Perimeter= 48 .
Perimeter of equilateral triangle = 48cm
I am extremely sorry for my mistake .
I forgot to take square of side in the formula.
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