Question

Find the area of the isosceles triangle with legs 12 and base 17. Simplify all radicals

Answer 1

Answer:

$Area= \frac{17 \sqrt{865} }{4} \: {units}^{2}$

Step-by-step explanation:

From Pythagoras theorem,

${h}^{2} = {12}^{2} + { (\frac{17}{2} )}^{2}$

${h}^{2} = \frac{865}{4}$

$h = \frac{ \sqrt{865} }{2}$

The area of the isosceles triangle is

$Area= \frac{1}{2} bh$

$Area= \frac{1}{2} \times 17 \times \frac{ \sqrt{865} }{2} = \frac{17 \sqrt{865} }{4}$