What’s the area of 16,20,12

A triangle with sides of 12, 16 and 20 is a right triangle. Look at the ratio between the sides, and you'll see that this is so. 12:16:20 is the same as 3:4:5 - by now, you probably know that a 3-4-5 triangle is a right triangle. To tell if any triangle is a right triangle, use the Pythagorean theorem: if the sum of the squares of the two shorter sides is equal to the square of the longest side (the hypotenuse), you have a right triangle. Here 12 squared is 144 and 16 squared is 256. 144 plus 256 = 400, which happens to be the answer you get when you square the hypotenuse (20). (20 squared is 400).

Step-by-step explanation:

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answer: 12   they all have at least 28 days

step-by-step explanation: haha