Question

The sides of a triangle are in the ratio of 5:7:8 and it's perimeter is 400m. Find the length of the sides

Answer 1

Step-by-step explanation:

let the sides of triangle= 5x, 7x and 8x

ATQ

5x+7x+8x= 400

20x=400

x=400/20

x=20

first angle= 5×20=100

second angle = 7×20=140

third angle = 8×20= 160

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Answer 2

Answer:

100m, 140m, 160m

Step-by-step explanation:

let the sides of the triangle be 5x , 7x, 8x

perimeter of a triangle = sum of all sides

=5x+7x+8x= 20x

but given perimeter is 400 m

so, 20x= 400

x=400/20=20 m

therefore the side of the triangle are ,

5x=5×20=100m, 7x=7×20 = 140m and

8x=8×20 =160m

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