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24-05-2017
Mathematics

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Find the perimeter of rectangle QRST, whose vertices are Q(-2,2),R(1,0),S(0,-1) and T(-3,1)

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Аноним Аноним

24-05-2017

the length of the side QR = sqrt ( -2-1)^2 + (2-0)^2) = sqrt 13
legth of RS = sqrt (-1^2 + -1^2) = sqrt 2

so perimeter = 2 sqrt13 + 2 sqrt2
= 2(sqrt13 + sqrt2)
= 10.04 to nearest hundredth

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