Question 17
After cutting 3 cm from two neighboring sides of a square card, we obtain a smaller square. Its area is 63 cm² less than the original. Find the perimeter of the original square.
Source glossary (English–Vietnamese): 2 neighboring sides: 2 cạnh kề nhau; Square: hình vuông; Area: diện tích; Less than: ít hơn; Original: ban đầu; Perimeter: chu vi.
Source glossary (English–Vietnamese): 2 neighboring sides: 2 cạnh kề nhau; Square: hình vuông; Area: diện tích; Less than: ít hơn; Original: ban đầu; Perimeter: chu vi.