Question

Express the perimeter $p$ of an isosceles triangle whose each side is $k$ and the unequal side is $l$

Answer 1

The isosceles triangle is a triangle in which two sides are equal and one side is unequal.

Length of each the equal side of the given triangle $=k$

Length of the unequal side of the given triangle$=l$

The perimeter of an Isosceles triangle = the sum of both equal sides and an unequal side.

The perimeter of an isosceles triangle$=\left(k+k+l\right)$

Thus, the perimeter of the given isosceles triangle

$p=2k+l$.