Question

The base of an isosceles triangle is 6 cm and its perimeter is 16 cm. Length of each of the equal sides is

(a) 4 cm

(b) 5 cm

(c) 3 cm

(d) 6 cm

Answer 1

Perimeter of an isosceles triangle = 16 cm

and base = 6 cm

Let each equal side = x cm

$\therefore$ x + x + 6 = 16 $\Rightarrow$ 2x = 16 - 6 = 10

$\Rightarrow x=\frac{10}{2}=5$

$\therefore$ Each equal side = 5 cm