Question

the perimeter of a triangle is 900 with ratio of 2:5:4 find the length of its side

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Answer 1

Answer:

= 2x + 5x + 4x = 900

= 11x = 900

= x = 900/11

= x = 81.81

1st side = 2x = 81.81 x 2 = 163.62

2nd side = 5x = 81.81 x 5 = 409.05

3rd side = 4x = 81.81 x 4 = 327.24

Answer 2

let us think 2:5:4 as 2x:5x:4x.

2:5:4 = 900

2x:5x:4x = 900

2x+5x+4x = 900

11x = 900

x = 900/11

x = 81.81

first side = 2×x = 2×81.81 = 163.62

second side = 5×x = 5×81.81 = 409.05

third side = 4×x = 4×81.81 = 327.24

the sum of all angle is almost 900(899.88).

hope it helps.