38cm + 65cm + 47cm = 150cm
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perimeer of the triangle = sum of all the sides = 18 +18+11= 47 cm hence perimeter is 47 cm
68 cm is the perimeter of 68 cm.
To find the perimeter of a rectangle, you can use the formula: Perimeter = 2(length + width). For a rectangle that is 14 cm long and 4 cm wide, the perimeter would be: 2(14 cm + 4 cm) = 2(18 cm) = 36 cm. Therefore, the perimeter is 36 cm.
The perimeter of a triangle is the sum of its 3 sides.
If each side of a square is 10 cm, the perimeter is 4 x 10 cm = 40 cm.