Answers

2014-08-21T19:53:55+05:30
Formula used: Distance between two point (a, b) and (c, d) = \sqrt{(a-b)^{2} + (c-d)^{2}}

Using the formula

(1) A(0, 0), B(0, 8), C(6, 0)
AB = 8
AC = 6
BC = 10

So perimeter = (8 + 6 + 10) / 3 = 24 / 3 = 8

(2) A(0, 0), B(1, -3), C(9, 3)
AB = \sqrt{10}
AC = 3\sqrt{10}
BC = 10

So perimeter = (\sqrt{10} + 3\sqrt{10} + 10) / 3 = \frac{10 + 4\sqrt{10}}{3} \\  \\ \frac{9 + 3\sqrt{10}}{3} + \frac{1 + \sqrt{10}}{3} \\  \\ 3 +  \sqrt{10} + \frac{1 + \sqrt{10}}{3}
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(x2-x1)2 + (y2-y1)2 use tis formula and send the problem
do some calc. by urself
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send the problem