YK asked in 科學及數學數學 · 1 decade ago

algebra expression

I would like to ask one algebra expression:

A wire with length 105 cm is cut into two. They are bent to form an equilateral triangle with lengths ycm and a square with lengths 3ycm. Find the area of the square.

Answer simply , thank you!

Update:

列式和列步驟 thank you!

2 Answers

Rating
  • 1 decade ago
    Favorite Answer

    Perimeter of the equilateral triangle = 3y cm

    Perimeter of the square = 4(3y) cm = 12y cm

    3y + 12y = 105

    15y = 105

    y=7

  • summer
    Lv 4
    1 decade ago

    y=7,

    area of the square=441cm square

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