Answer:
260 square feet
Explanation:
The area of a rectangle is given by the formula ...
A = LW
The area of two same-size rectangular rooms will be double the area of one of them.
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room area
Each room has an area of ...
A = LW = (13 ft)(10 ft) = 130 ft²
carpet order
The order for carpet must be for 2 times the area of one room:
carpet order = 2 × 130 ft² = 260 ft²
Jerry should order 260 square feet of carpet.