two equal sides of an isosceles triangle are each 4 cm less than three times the third side find the dimensions of the rectangle if its perimeter is 55 CM
Answers
Answered by
3
let the third side be x,
then the two equal sides are 3x-4, 3x-4
perimeter, p = 55 cm = a+b+c
55 = x + 3x-4 + 3x -4
55 = 7x-8
7x =63
x = 9 cm.
so, 3x-4 = 3×9 -4=23
so the sides of triangle are 9, 23, 23.
then the two equal sides are 3x-4, 3x-4
perimeter, p = 55 cm = a+b+c
55 = x + 3x-4 + 3x -4
55 = 7x-8
7x =63
x = 9 cm.
so, 3x-4 = 3×9 -4=23
so the sides of triangle are 9, 23, 23.
Similar questions