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bethjewell1996
Group Title
The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the triangle is 90 cm? (1 point)
22.5 cm, 30 cm, and 37.5 cm
19.3 cm, 25.7 cm, and 32.1 cm
7.5 cm, 11.5 cm, and 32.1 cm
10.5 cm, 11.5 cm, and 12.5 cm
 one year ago
 one year ago
bethjewell1996 Group Title
The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the triangle is 90 cm? (1 point) 22.5 cm, 30 cm, and 37.5 cm 19.3 cm, 25.7 cm, and 32.1 cm 7.5 cm, 11.5 cm, and 32.1 cm 10.5 cm, 11.5 cm, and 12.5 cm
 one year ago
 one year ago

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JayDS Group TitleBest ResponseYou've already chosen the best response.0
I believe it is the first choice because the perimeter of option 1) 22.5+30+37.5 = 90cm and the rest of the other options do not total to 90cm.
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
Let x be the number you multiply 3 (of the ratio) to get the real length of that side, then the three sides can be represented by 3x, 4, and 5x. P = 3x + 4x + 5x = 90 12x = 90 x = 7.5 3x = 22.5 4x = 30 5x = 37.5 Answer: 22.5 cm, 30 cm, 37.5 cm
 one year ago
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