the sides of a triangle are in the ratio 3:4:5 and its perimeter is 84 cm find the length of its side.
Answers
Answered by
57
Answer:
Let the sides of the triangle be 3x, 4x and 5x.
Perimeter = 84 cm.
As perimeter of a triangle is the sum of all sides.
3x+4x+5x= 84cm.
12x= 84cm.
x=7cm.
1st side = 3x = 3*7 = 21cm.
2nd side = 4x = 4*7 = 28cm.
3dd side = 5x = 5*7 = 35cm.
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Answered by
16
Answer:
sides= 3x, 4x, 5x
perimeter= sum of sides
84cm = 3x+4x+5x
84cm = 12x
84/12 =. x
7cm = x
length = 7×5= 35cm
breadth = 7×4= 28cm
height= 7×3= 21cm
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