Well, darling, to find the area of a rectangle, you simply multiply the length by the width. So, for a 7cm by 9cm rectangle, the area would be 63 square centimeters. Easy peasy lemon squeezy!
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9cm obv
The area of a rectangle is always length multiplied by width. Therefore, the area of the mentioned rectangle is 36cm2.
Area = length x width ⇒ width = Area ÷ length = 34 cm2 ÷ 9 cm = 37/9 cm ~= 3.78 cm
3 x 9
81 sq cm, for a 9 cm * 9 cm square