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A triangle has side lengths in the ratio 3 : 4 : 5. If the perimeter of the triangle is 84 cm, what is the length of the shortest side?

 Apr 9, 2015

Best Answer 

 #2
avatar+111400 
+10

3, 4 and 5 imply that 12 equal parts comprise  the 84cm

So, 3 i of those 12 parts = 

3/12 x 84  =

1/4 x 84  =

21 cm

 

For the second question, the fruit part is 3/4 of  the jam part....so...if  1 kg of fruit is used, then 3/4 kg of sugar is used.

 

  

 Apr 9, 2015
 #1
avatar+97 
0

Jam is made from 4 parts fruit to 3 parts sugar. How much sugar is needed to make jam from 1kg of fruit?

 Apr 9, 2015
 #2
avatar+111400 
+10
Best Answer

3, 4 and 5 imply that 12 equal parts comprise  the 84cm

So, 3 i of those 12 parts = 

3/12 x 84  =

1/4 x 84  =

21 cm

 

For the second question, the fruit part is 3/4 of  the jam part....so...if  1 kg of fruit is used, then 3/4 kg of sugar is used.

 

  

CPhill Apr 9, 2015
 #3
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0

Ratio = 3:4:5 

Perimeter = 84 centimeters 

 

Length of the smallest side = 3x +4x + 5x = 84

                                                  = 12x = 84

                                                  = 3/12  × 84

                                                  =  21 Centimeters

 

Answer = The length of the smallest side of the triangle is 21 Centimeters.

 Feb 20, 2017
 #4
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0

Ratio = 3:4:5 

Perimeter = 84 centimeters 

 

Length of the smallest side = 3x +4x + 5x = 84

                                                  = 12x = 84

                                                  = 3/12  × 84

                                                  =  21 Centimeters

 

Answer = The length of the smallest side of the triangle is 21 Centimeters.

 Feb 20, 2017

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