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| 1. |
If the area of an equilateral triangle is 36under root 3 cm find the perimeter |
| Answer» ar( equi. tri ) = root 3 ÷4 × a square =36 root 3 = root 3× a square =4× 36 root 3 = root 3× a square = 144 root 3 = a square = 144 root 3÷ root 3 so, a= 12 now perimeter = 12+12+12=36 | |