The sides of a triangle are 5, 12, and 13 units. A rectangle of width 10 units is constructed whose area is equal to the area of the triangle. Find the perimeter of the rectangle.

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A 30 units
B 26 units
C 13 units
D 15 units

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Answer: B. 26 units

5, 12, 13 is a right triangle (5² + 12² = 13²), so its area = 1/2 x 5 x 12 = 30 sq units.
Rectangle: width 10, area 30, so length = 3.
Perimeter = 2 x (10 + 3) = 26 units.

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The sides of a triangle are 5, 12, and 13 units. A rectangle of width 10 units is constructed whose area is equal to the area of the triangle. Find the perimeter of the rectangle.

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