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Base 10 is based on groupings of 10, and the digits are called 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. Base 11 is based on groupings of 11, and the digits are called 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and A. A is used instead of 10 to avoid confusion, because it is a single digit, not two digits that actually have the base 10 value of 11. Notice in 10 base 10, you are using 2 digits, a 1 in the tens place and a 0 in the ones place. In base 11, you only need 1 digits, an A, which has the same effective value.
In base 11 vs In base 10 10 = 11 20 = 22 30 = 33 So, it is simply dividing whatever value in base 11 by 10 then multiplying it back by 11, but digit by digit. Example, 45 in base 11: 45 = 40 + 5 (still true) = 40/10*11 + 5 (leave the 5 untouched) = 44 + 5 = 49 (in base 10)
1001 (base 2) = 1(2)3 + 0 + 0 + 1 = 8 + 1 = 9 (base 10)9 (base 10) = 1(8) + 1 = 11 (base 8).
The formula for the area of a triangle is (base x height)/2. Since we're dealing with a right triangle, we can say that the base and height are 10 and 11 units long, respectively. Therefore, the are is (10 x 11)/2 or 55 units squared.
10 base 2 = 2 base 10