It is 12*5 = 60 square centimetres.
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Rectangle area easiest math for area: 5cm X 3cm = 15cm2
area of rectangle = l* b = 5 * 2=10 cm^ 2
15 cm^2
Well, let's paint a happy little picture here. If the length of the rectangle is 5 cm and the area is 20 cm squared, we can use a simple formula to find the width. Since the area of a rectangle is length times width, we can divide the area by the length to find the width. So, 20 cm squared divided by 5 cm gives us a width of 4 cm. Happy painting!
area of rectangle = l * b area = 8 * 5 =40 m ^2 ( 1 m=100 cm 500cm= 5 m)