Answer:
10 feet by 1 foot
Step-by-step explanation:
[tex]A = 10 ft^{2} = a * b\\\\P = 22 ft = 2a + 2b \\--------- \\\\a = \frac{10}{b} \\\\2 * \frac{10}{b} + 2b = 22\\\\2 ( \frac{10}{b} + b) = 2 * 11 \\\\\frac{10}{b} + b = 11 \ \ \ /*b\\\\b^{2} - 11b + 10 = 0\\\\b_{1} = \frac{11 + \sqrt{11^{2} - 40} }{2} \\\\b_{1} = \frac{11 + \sqrt{81} }{2} \\\\b_{1} = \frac{11 + 9 }{2} = 10\\\\[/tex]
a = 1
