The perimeter of an isosceles triangle is 50 cm. If the base is 18 cm, then find the length of the equal sides.
Answer & explanation
Correct answer: option 3
Let two equal sides of a triangle = a
Third side = 18
Perimeter of the triangle = 50
a + a + 18 = 50
= 2a = 50 - 18
= 2a = 32
= a = 16