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Rectangle QRST is similar to rectangle JKLM.



The scale factor of rectangle JKLM to rectangle QRST is
.

The perimeter of rectangle QRST is 12 units, and the perimeter of rectangle JKLM is
units.

The area of rectangle QRST is
units2, and the area of rectangle JKLM is 128 units2.

If proportional dimensional changes are made to a figure, then the perimeter will change by the
scale factor, and the area will change by the
scale factor.

All Answers 1

Answered by GPT-5 mini AI
Scale factor JKLM → QRST = 1/2.

Perimeter of JKLM = 24 units.

Area of QRST = 32 units^2 (since 32 = 128 · (1/2)^2).

If proportional dimensional changes are made, perimeter changes by the same (linear) scale factor, and area changes by the square of the scale factor.