Perimeter of a square of 28 cm Find the area of a rectangle width of which is equal to the party of this square, and length 3 times bigger than width. Solve a problem please!

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1) 28:4=7 (cm) - 1 party of a square and width of a rectangle

2) 7*3=21 (cm) - rectangle length

3) 7*21=147 (cm in a square) - the area of a rectangle

Answer's

: the area of a rectangle = 147 cm in a square.

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