Question 792835
The formula to find the area of a triangle is {{{A=(1/2)BH}}}, where B is the length of the base and H is the height. So {{{60= (1/2)24H}}}, and we can find that H=5. Using the altitude of the isosceles triangle and half of the base, we can apply the Pythagorean Theorem({{{a^2+b^2=c^2}}}) to find the length of the other two sides. So 12^2+5^2=144+25=169=13^2, and we get the length of the two sides are 13.
 The perimeter of this triangle is then 24+13+13=50