Question

The sides of a triangle are in the ratio 5:3:7.If the perimeter of the triangle is 90cm,find the measures of its sides.Tell with process.​

Answer 1

Answer:

30 cm,18cm,42cm

Step-by-step explanation:

let 1st side of triangle = 5x

" 2nd " " " = 3x

" 3rd " " " = 7x

perimeter of triangle = 90cm

A.T.Q

sum of all sides of triangle = perimeter of triangle

5x+3x+7x = 90

15x = 90

x = 6

as 1st side of triangle = 5×6 = 30cm

" 2nd " " " = 3×6 = 18cm

" 3rd " " " = 7×6 = 42cm

Happy To Help!!!!

Answer 2

we know that sum of all sides =perimeter

5x+3x+7x=90cm

15x=90cm

x=90/15

therefore,x=6

if x,=6

5x=5*6=30

3x=3*6=18

7x=7*6=42

therefore,first side is 30°,second side=18°andthird side is 42°