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The area of an equilateral triangle is 3...

The area of an equilateral triangle is `36 sqrt(3) cm^(2)`. Its perimeter is

A

`66` cm

B

`56` cm

C

`36` cm

D

`46` cm

Text Solution

Verified by Experts

The correct Answer is:
C
`(sqrt(3))/(4) xx a^(2) = 36 sqrt(3) rArr a^(2) = 144 rArr a = 12`.
`therefore" ""perimeter" = (3 xx 12) cm = 36 cm`.
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RS AGGARWAL-AREAS OF TRIANGLES AND QUADRILATERALS-Exercise 14
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