Mathematics, 01.02.2021 20:20 girlgirl7230

A large rectangle is made by joining three identical small rectangles as shown. The perimeter of one small rectangle is 21 cm.
The width of one small rectangle is x cm.
x cm
Work out the perimeter of the large rectangle.
The final line of your answer should be of the form,
Perimeter of large rectangle is ... cm

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