Area of triangle

[srcc25anu]

What is the area of triangle ABC?
(1) Triangle ABC is isosceles.
(2) AB= 10 and BC = 12

[HSPA]

Two options using A and B : 10,10, 12 or 12,12,10

area = sqrt( s * s-a * s-b *s-c) , s = a+b+c / 2;


E it shall be

[Anurag@Gurome]

What is the area of triangle ABC?
(1) Triangle ABC is isosceles.
(2) AB= 10 and BC = 12

(1) Triangle ABC is isosceles does not give us the area of triangle ABC. So, (1) is NOT SUFFICIENT.

(2) We are given the length of 2 sides of triangle ABC. But again this is NOT SUFFICIENT.

Combining (1) and (2), we don't whether AC = 10 or 12. So, again combining is NOT SUFFICIENT to answer the question.

The correct answer is E.