Asked by Seohyun

each side of equilateral triangle is 5 cm shorter than the side of square. the sum of the perimeters of the two figures is 251 cm. how long is each side of the triangle?
solution pls.

Answers

Answered by Reiny
I will set up your definitions

let each side of the square be x
then each side of the triangle is x-5

"the sum of the perimeters of the two figures is 251 cm"
translate this into your equation, then solve for x
Replace you x value in the definitions.

let me know what you got
Answered by Seohyun
is the answer is x = 128
Answered by Reiny
not very likely!

that would make the perimeter of the square alone equal to 512

wouldn't your equation have been
4x + 3(x-5) = 251 ??

I get x = 38
(which meets all the conditions)
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