There is a slide in a park. One of its side walls has been painted in some colour with a message "Keep the park green and Clean". If sides of the wall are 15m, 11 m and 6 m, the area painted in colour is________.
A
20√6 m2
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B
20√3 m2
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C
20 √2 m2
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D
10 √2 m2
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