The side of a triangle are in the ratio 3 :5:7? and its perimeter is 45 cm what are the length of sides
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Answered by
43
Answer:
Let the 1st side of a ∆ be 3x
2nd side = 5x
3rd side = 7x
Perimeter = 45
A/q
3x + 5x + 7x = 45
=> 15 x = 45
=> x = 45/15
= 3
Hence ,
1st side = 3x = 3×3 = 9 cm
2nd side = 5x = 5×3 = 15 cm
3rd side = 7x = 7×3 = 21 cm
Ans...
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Answered by
6
Answer:
3x+5x+7x=45
15x=45
x=45/15
x=3
3x=3×3=9
5x=5×3=15
7x=7×3=21
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