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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

When any of the side is not given, the perimeter can be found as x+y+z. As when I asked u for detail, u said it is an equilateral triangle. Therefore, IN AN EQUILATERAL TRIANGLE, ALL SIDES ARE EQUAL. Therefore, the perimeter is 3x. as x+x+x = 3x. In an equilateral triangle, all the angles are 60 degree. The area of the equilateral triangle is always, √3/4 a² unit sq. Hope this will help you.