taymakrake taymakrake

08-09-2017
Mathematics

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a triangle has a perimeter of 91 centimeters. each of the two longer sides are three times as long as the shortest side. find the length of the three sides

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musiclover10045 musiclover10045

08-09-2017

perimeter = a+b+c

a = short side

b = 3a

c = 3a

a +3a+3a = 91

7a = 91

a=91/7 = 13

short side = 13cm

long sides = 3*13 = 39cm each

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