18 Find the length of each side of an equilateral triangle having an area 4
3 cm
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Step-by-step explanation:
8 cm
36 cm
4 cm
6 cm
Answer :
D
Solution :
(d) Given, are of an equilateral triangle=93–√cm2Given, are of an equilateral triangle=93cm2
∵Area of an equilateral triangle=3–√4(Side)2∵Area of an equilateral triangle=34(Side)2
⇒3–√4(Side)2=93–√⇒34(Side)2=93
⇒(Side)2=36⇒(Side)2=36
∴Side=6cm∴Side=6cm
[taking positive square root becuase side is always positive][taking positive square root becuase side is always positive]
Hence, the length of an equilateral triangle is 6cm.Hence, the length of an equilateral triangle is 6cm.
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