John memiliki 2 bangun datar yaitu segitiga sama sisi dan belah ketupat. Sisi segitiga sama sisi sebesar 22 cm, sedangkan masing-masing pasangan sisi belah ketupat yaitu 12 cm dan 19 cm. Selisih keliling kedua bangun datar milik John yaitu .... cm.
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John has two geometric shapes. First, an equilateral triangle with each side measuring 22 centimeters. Second, a rhombus with two pairs of sides measuring 12 centimeters and 19 centimeters respectively. We need to find the difference between their perimeters.
Let's calculate the perimeter of the equilateral triangle first. For an equilateral triangle, all three sides are equal. The perimeter formula is 3 times the side length. So we have 3 times 22 centimeters, which equals 66 centimeters.
Now let's calculate the rhombus perimeter. A rhombus has two pairs of equal sides. The perimeter is 2 times the sum of one pair of different sides. So we have 2 times the sum of 12 and 19 centimeters, which is 2 times 31, equals 62 centimeters.
Finally, let's calculate the difference between the two perimeters. We take the absolute value of 66 minus 62 centimeters. This gives us the absolute value of 4, which equals 4 centimeters. Therefore, the difference in perimeters is 4 centimeters.
Let's summarize our solution. The equilateral triangle has a perimeter of 66 centimeters. The rhombus has a perimeter of 62 centimeters. The difference between these perimeters is 4 centimeters. Therefore, the final answer is 4 centimeters.