Answers

2016-02-18T18:59:22+08:00
The answer is P= 2l +2w
                        P= 50 cm
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2016-02-18T19:33:58+08:00
Perimeter = 2(l + w)
                 = 2(15 cm + 10 cm)
                 = 2(25 cm)
                 = 50 cm 

Therefore, the answer to your question is 50 cm.
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