From a point within an equilateral triangle perpendicular drawn to the three sides are 6cm, 7cm and 8cm respectively. The length of each sides of the triangle is
Options:
A . 7cm
B . 10.5cm
C . .
D . .
Answer: Option C
LetOL = 6cm , OM =7cm and ON =8cm Let AB =BC =CA = a cm
x a2 =(1/2 x a x 6 +1/2 x a x 7 +1/2 x a x 8) x a2 = ½ a x (6+7+8) = 42 a => a = =
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