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8. The perimeter of equilateral triangle is 60 cm. The area is 103 root cm2100root3 cm220root3 cm230 root3 cm2 |
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Answer» perimeter of equilateral TRIANGLE is 60 cmTo find :it's area Solution :perimeter of an equilateral triangle = 603a = 60a = 60/3a = 20 CMAREA of an equilateral triangle = √3/4 a² SQ. units= √3/4 x 20 x 20= √3/4 x 400= 100√3 cm²=> it's area is 100√3 cm²then the option 2 is correct |
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