5, 5 and 2 units
The perimeter of any triangle is the sum of its 3 sides.
If the base of an isosceles triangle is 11 and its perimeter is 39, then it has a height of 12.87.
The dimensions given would not form a triangle and so no perimeter is possible
It is the sum of the lengths of its sides.
Perimeter of the isosceles triangle: 16.2+16.2+8.1 = 40.5 cm
How about: 11, 11, and 3 cm or as 7, 7 and 11 cm for its perimeter dimensions
The perimeter of any triangle is the sum of its 3 sides.
If the base of an isosceles triangle is 11 and its perimeter is 39, then it has a height of 12.87.
it can have an infininite number of dimensions.
If you mean "isosceles" triangle, the perimeter is the sum of twice the known side plus the base.
The dimensions given would not form a triangle and so no perimeter is possible
It is the sum of the lengths of its sides.
I don't see any isosceles triangle below.In general, the perimeter is the sum of the lengths of all sides. Note that in an isosceles triangle, two of the three sides have the same length.
Perimeter of the isosceles triangle: 16.2+16.2+8.1 = 40.5 cm
Lengths of: equal side+equal side+base = perimeter
It is possible for an isosceles triangle to be an acute triangle because, in an acute triangle all the angles have to be less than 90o.
Add the lengths of the three individual sides.