3.68 x 8 = 29.44 square centimetres
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This question needs additional information, To get the area of the shaded area get the difference between the total area and the un-shaded region.
The perimeter and area don't depend on each other. Knowing one doesn't tell you the other. -- A circle with perimeter (circumference) of 20 cm has area of 31.83 cm2. -- A square with perimeter of 20 cm has area of 25 cm2 . -- A (9 x 1) rectangle has perimeter of 20 cm and area of 9 cm2 . -- A (8 x 2) rectangle has perimeter of 20 cm and area of 16 cm2 . -- A (7 x 3) rectangle has perimeter of 20 cm and area of 21 cm2 . -- A (6 x 4) rectangle has perimeter of 20 cm and area of 24 cm2 .
Oh, what a lovely little rectangle we have here! To estimate its area, we can round the dimensions to 4 cm by 8 cm. So, the approximate area would be 32 square centimeters. Remember, it's all about happy little approximations!
If you have a rectangle with sides as follows: 4,4,3,3 the area is 12cm2 and the perimeter is 14. Area: 4cmx3cm=12cm2 Perimeter: * 4+4=8 * 3+3=6 * 8+6=14cm