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.
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Answered by
3
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!!!!
Answered by
1
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°
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