Question

The length of a triangle is 7 cm more than five times the width. The perimeter is 254cm . find the dimensions of the triangle. I need answer pleasee

Answer 1

Perimeter = 254cm

AB + BC + CA = 254cm

Answer 2

x + 7 + 5x + CA = 254

Answer 3

Suppose CA is "y"

\[x + 7 + 5x + y = 254\]

Now I think you should be able to solve this ahead...

Answer 4

@Disco619 you have two variables you can not solve this ahead

Answer 5

either the triangle has to be an isoceles

Answer 6

@trix11 are u sure the question mentioned the length of a triangle,, because it should be of another shape...please check

Answer 7

@mohammad.arqum Sorry . Its Rectangle.

Answer 8

see now that makes the question loads easier

Answer 9

^that's what the equation comes considering if only "One" side of the triangle is "x". If it's an "Isosceles" triangle then simply do this:


Because an Isosceles triangle has two sides equal.
\[x+x+7+5x=254\]
\[2x+7+5x = 254\]
\[7x + 7 = 254\]
\[7x = 254 - 7\]
\[7x = 247\]
\[x = \frac{ 247 }{ 7 }\]
\[x = 35.28571428571429\]

Now if you have to round it off, do that and then Substitute it's value with the "x" in:
\[7 + 5x\]
to find the Length.

And the value of "x" (width of triangle) itself would be "35.28571428571429"

Answer 10

@Disco619 would u try to do it

Answer 11

LOL A RECTANGLE!

Answer 12

LOL

Answer 13

Im done! @mohammad.arqum , you do it. [facepalm]

Answer 14

okay length=x
width=5x+7
2x+10x+14=254
12x=240
x=20
length=20
width=107

Answer 15

Oh :D thank you so much the two of you . @mohammad.arqum @Disco619 big help :)

Answer 16

No biggy @trix11