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If the perimeter and diagonal of a rectangle are 42cm and 15cm respectively. Then the sides are

A11m, 10m

B13m,8m

C14m, 7m

D12m, 9m

Answer:

D. 12m, 9m

Read Explanation:

2(a+b)=42 a+b=21 d=15 d²=a²+b² 15²=a²+b² a²+b² = 12²+9²=225


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