The perimeter of a circle and a rectangle is equal. The measure of the sides of the rectangle is 18 cm. and 26 cm. respectively. What will be the diameter of the circle? एक वृत्त और एक आयत का परिमाप समान है। आयत की भुजाओं की माप क्रमशः 18 सेमी. और 26 सेमी. है। वृत्त का व्यास क्या होगा?

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