How to find the height of of an acute / obtuse isosceles triangle

Practice Questions

ACT Math › How to find the height of of an acute / obtuse isosceles triangle

Questions

What is the height of an isosceles triangle which has a base of and an area of ?

An isosceles triangle has a base of $12\ cm$ and an area of $42\ cm^{2}$ . What must be the height of this triangle?